75138040 has 16 divisors (see below), whose sum is σ = 169060680. Its totient is φ = 30055200.

The previous prime is 75138029. The next prime is 75138059. The reversal of 75138040 is 4083157.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 939186 + ... + 939265.

Almost surely, 2^75138040 is an apocalyptic number.

It is an amenable number.

75138040 is an abundant number, since it is smaller than the sum of its proper divisors (93922640).

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

75138040 is a wasteful number, since it uses less digits than its factorization.

75138040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878462 (or 1878458 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 75138040 is about 8668.2201171867. The cubic root of 75138040 is about 421.9749017365.

The spelling of 75138040 in words is "seventy-five million, one hundred thirty-eight thousand, forty".