90795138 has 24 divisors (see below), whose sum is σ = 211238352. Its totient is φ = 25941384.

The previous prime is 90795127. The next prime is 90795157. The reversal of 90795138 is 83159709.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 90795138.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154120 + ... + 154707.

It is an arithmetic number, because the mean of its divisors is an integer number (8801598).

Almost surely, 2^90795138 is an apocalyptic number.

90795138 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

90795138 is an abundant number, since it is smaller than the sum of its proper divisors (120443214).

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

90795138 is a wasteful number, since it uses less digits than its factorization.

90795138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308846 (or 308839 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 90795138 is about 9528.6482776940. The cubic root of 90795138 is about 449.4563607849.

The spelling of 90795138 in words is "ninety million, seven hundred ninety-five thousand, one hundred thirty-eight".