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12801942 = 233237073
BaseRepresentation
bin110000110101…
…011110010110
3220002101222000
4300311132112
511234130232
61134220130
7213546306
oct60653626
926071860
1012801942
11725431a
124354646
13286301a
1419b3606
1511cd27c
hexc35796

12801942 has 16 divisors (see below), whose sum is σ = 28448880. Its totient is φ = 4267296.

The previous prime is 12801923. The next prime is 12801947. The reversal of 12801942 is 24910821.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12801947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118483 + ... + 118590.

It is an arithmetic number, because the mean of its divisors is an integer number (1778055).

Almost surely, 212801942 is an apocalyptic number.

12801942 is an abundant number, since it is smaller than the sum of its proper divisors (15646938).

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

12801942 is a wasteful number, since it uses less digits than its factorization.

12801942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237084 (or 237078 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 12801942 is about 3577.9801564570. The cubic root of 12801942 is about 233.9332485472.

The spelling of 12801942 in words is "twelve million, eight hundred one thousand, nine hundred forty-two".

Divisors: 1 2 3 6 9 18 27 54 237073 474146 711219 1422438 2133657 4267314 6400971 12801942