32790138 has 16 divisors (see below), whose sum is σ = 65844576. Its totient is φ = 10886000.

The previous prime is 32790137. The next prime is 32790139. The reversal of 32790138 is 83109723.

It is an interprime number because it is at equal distance from previous prime (32790137) and next prime (32790139).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 32790099 and 32790108.

It is not an unprimeable number, because it can be changed into a prime (32790133) 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, 9381 + ... + 12392.

It is an arithmetic number, because the mean of its divisors is an integer number (4115286).

Almost surely, 2^32790138 is an apocalyptic number.

32790138 is an abundant number, since it is smaller than the sum of its proper divisors (33054438).

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

32790138 is a wasteful number, since it uses less digits than its factorization.

32790138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22029.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 32790138 is about 5726.2673706351. The cubic root of 32790138 is about 320.0720475794.

The spelling of 32790138 in words is "thirty-two million, seven hundred ninety thousand, one hundred thirty-eight".