75085440 has 64 divisors (see below), whose sum is σ = 239340960. Its totient is φ = 20022272.

The previous prime is 75085433. The next prime is 75085457. The reversal of 75085440 is 4458057.

It is a tau number, because it is divible by the number of its divisors (64).

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, 17634 + ... + 21473.

Almost surely, 2^75085440 is an apocalyptic number.

It is an amenable number.

75085440 is an abundant number, since it is smaller than the sum of its proper divisors (164255520).

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

75085440 is a wasteful number, since it uses less digits than its factorization.

75085440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39129 (or 39117 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 75085440 is about 8665.1855144596. The cubic root of 75085440 is about 421.8764116276.

The spelling of 75085440 in words is "seventy-five million, eighty-five thousand, four hundred forty".