75139770 has 32 divisors (see below), whose sum is σ = 181025280. Its totient is φ = 19960640.

The previous prime is 75139769. The next prime is 75139837. The reversal of 75139770 is 7793157.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3415 + ... + 12725.

It is an arithmetic number, because the mean of its divisors is an integer number (5657040).

Almost surely, 2^75139770 is an apocalyptic number.

75139770 is an abundant number, since it is smaller than the sum of its proper divisors (105885510).

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

75139770 is a wasteful number, since it uses less digits than its factorization.

75139770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9590.

The product of its (nonzero) digits is 46305, while the sum is 39.

The square root of 75139770 is about 8668.3199064179. The cubic root of 75139770 is about 421.9781402691.

The spelling of 75139770 in words is "seventy-five million, one hundred thirty-nine thousand, seven hundred seventy".