75131828 has 6 divisors (see below), whose sum is σ = 131480706. Its totient is φ = 37565912.

The previous prime is 75131807. The next prime is 75131831. The reversal of 75131828 is 82813157.

It can be written as a sum of positive squares in only one way, i.e., 42276004 + 32855824 = 6502^2 + 5732^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9391475 + ... + 9391482.

It is an arithmetic number, because the mean of its divisors is an integer number (21913451).

Almost surely, 2^75131828 is an apocalyptic number.

It is an amenable number.

75131828 is a deficient number, since it is larger than the sum of its proper divisors (56348878).

75131828 is a wasteful number, since it uses less digits than its factorization.

75131828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18782961 (or 18782959 counting only the distinct ones).

The product of its digits is 13440, while the sum is 35.

The square root of 75131828 is about 8667.8617893919. The cubic root of 75131828 is about 421.9632725611.

The spelling of 75131828 in words is "seventy-five million, one hundred thirty-one thousand, eight hundred twenty-eight".