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122144830 = 25172692671
BaseRepresentation
bin1110100011111…
…00100000111110
322111211121012121
413101330200332
5222232113310
620041553154
73012133243
oct721744076
9274747177
10122144830
1162a47245
1234aa57ba
131c3c8262
14123175ca
15aacb0da
hex747c83e

122144830 has 32 divisors (see below), whose sum is σ = 233746560. Its totient is φ = 45795840.

The previous prime is 122144821. The next prime is 122144831. The reversal of 122144830 is 38441221.

It is a junction number, because it is equal to n+sod(n) for n = 122144795 and 122144804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122144831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44395 + ... + 47065.

It is an arithmetic number, because the mean of its divisors is an integer number (7304580).

Almost surely, 2122144830 is an apocalyptic number.

122144830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122144830 is a deficient number, since it is larger than the sum of its proper divisors (111601730).

122144830 is a wasteful number, since it uses less digits than its factorization.

122144830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2964.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 122144830 is about 11051.9152186397. The cubic root of 122144830 is about 496.1637482889.

The spelling of 122144830 in words is "one hundred twenty-two million, one hundred forty-four thousand, eight hundred thirty".

Divisors: 1 2 5 10 17 34 85 170 269 538 1345 2671 2690 4573 5342 9146 13355 22865 26710 45407 45730 90814 227035 454070 718499 1436998 3592495 7184990 12214483 24428966 61072415 122144830