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7146381972 = 2231214949019
BaseRepresentation
bin1101010011111010…
…10010001010010100
3200110001011211002210
412221331102022110
5104113433210342
63141043433420
7342044146602
oct65175221224
920401154083
107146381972
113037a45604
121475385870
1389b7390b2
144bb182872
152bc5d179c
hex1a9f52294

7146381972 has 24 divisors (see below), whose sum is σ = 16676604000. Its totient is φ = 2381882656.

The previous prime is 7146381971. The next prime is 7146381989. The reversal of 7146381972 is 2791836417.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7146381971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121279 + ... + 170297.

It is an arithmetic number, because the mean of its divisors is an integer number (694858500).

Almost surely, 27146381972 is an apocalyptic number.

It is an amenable number.

7146381972 is an abundant number, since it is smaller than the sum of its proper divisors (9530222028).

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

7146381972 is a wasteful number, since it uses less digits than its factorization.

7146381972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61175 (or 61173 counting only the distinct ones).

The product of its digits is 508032, while the sum is 48.

The square root of 7146381972 is about 84536.2760712820. The cubic root of 7146381972 is about 1926.1735215451.

The spelling of 7146381972 in words is "seven billion, one hundred forty-six million, three hundred eighty-one thousand, nine hundred seventy-two".

Divisors: 1 2 3 4 6 12 12149 24298 36447 48596 49019 72894 98038 145788 147057 196076 294114 588228 595531831 1191063662 1786595493 2382127324 3573190986 7146381972