75129864 has 32 divisors (see below), whose sum is σ = 193885440. Its totient is φ = 24235200.

The previous prime is 75129853. The next prime is 75129871. The reversal of 75129864 is 46892157.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49747 + ... + 51234.

It is an arithmetic number, because the mean of its divisors is an integer number (6058920).

Almost surely, 2^75129864 is an apocalyptic number.

It is an amenable number.

75129864 is an abundant number, since it is smaller than the sum of its proper divisors (118755576).

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

75129864 is a wasteful number, since it uses less digits than its factorization.

75129864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101021 (or 101017 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 75129864 is about 8667.7484965820. The cubic root of 75129864 is about 421.9595957213.

The spelling of 75129864 in words is "seventy-five million, one hundred twenty-nine thousand, eight hundred sixty-four".