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7142011992 = 23321938913421
BaseRepresentation
bin1101010011011001…
…00111010001011000
3200102201221210121200
412221230213101120
5104111323340432
63140410034200
7341662046253
oct65154472130
920381853550
107142011992
113035530355
121473a18960
1389a868ccb
144ba76609a
152bc01ba7c
hex1a9b27458

7142011992 has 96 divisors (see below), whose sum is σ = 20414862000. Its totient is φ = 2249406720.

The previous prime is 7142011951. The next prime is 7142011997. The reversal of 7142011992 is 2991102417.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7142011997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 525442 + ... + 538862.

Almost surely, 27142011992 is an apocalyptic number.

7142011992 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7142011992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10207431000).

7142011992 is an abundant number, since it is smaller than the sum of its proper divisors (13272850008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7142011992 is a wasteful number, since it uses less digits than its factorization.

7142011992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13841 (or 13834 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 7142011992 is about 84510.4253450425. The cubic root of 7142011992 is about 1925.7808260476.

The spelling of 7142011992 in words is "seven billion, one hundred forty-two million, eleven thousand, nine hundred ninety-two".

Divisors: 1 2 3 4 6 8 9 12 18 19 24 36 38 57 72 76 114 152 171 228 342 389 456 684 778 1167 1368 1556 2334 3112 3501 4668 7002 7391 9336 13421 14004 14782 22173 26842 28008 29564 40263 44346 53684 59128 66519 80526 88692 107368 120789 133038 161052 177384 241578 254999 266076 322104 483156 509998 532152 764997 966312 1019996 1529994 2039992 2294991 3059988 4589982 5220769 6119976 9179964 10441538 15662307 18359928 20883076 31324614 41766152 46986921 62649228 93973842 99194611 125298456 187947684 198389222 297583833 375895368 396778444 595167666 793556888 892751499 1190335332 1785502998 2380670664 3571005996 7142011992