32156138 has 8 divisors (see below), whose sum is σ = 55124832. Its totient is φ = 13781196.

The previous prime is 32156087. The next prime is 32156147. The reversal of 32156138 is 83165123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×32156138² = 2068034422150088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 32156138.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1148420 + ... + 1148447.

It is an arithmetic number, because the mean of its divisors is an integer number (6890604).

Almost surely, 2^32156138 is an apocalyptic number.

32156138 is a deficient number, since it is larger than the sum of its proper divisors (22968694).

32156138 is a wasteful number, since it uses less digits than its factorization.

32156138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2296876.

The product of its digits is 4320, while the sum is 29.

The square root of 32156138 is about 5670.6382356839. The cubic root of 32156138 is about 317.9957345524.

The spelling of 32156138 in words is "thirty-two million, one hundred fifty-six thousand, one hundred thirty-eight".