75138090 has 16 divisors (see below), whose sum is σ = 180331488. Its totient is φ = 20036816.

The previous prime is 75138067. The next prime is 75138109. The reversal of 75138090 is 9083157.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1252272 + ... + 1252331.

It is an arithmetic number, because the mean of its divisors is an integer number (11270718).

Almost surely, 2^75138090 is an apocalyptic number.

75138090 is an abundant number, since it is smaller than the sum of its proper divisors (105193398).

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

75138090 is a wasteful number, since it uses less digits than its factorization.

75138090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504613.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 75138090 is about 8668.2230012846. The cubic root of 75138090 is about 421.9749953364.

The spelling of 75138090 in words is "seventy-five million, one hundred thirty-eight thousand, ninety".