1390041528 has 16 divisors (see below), whose sum is σ = 3475103880. Its totient is φ = 463347168.

The previous prime is 1390041509. The next prime is 1390041551. The reversal of 1390041528 is 8251400931.

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, 28959175 + ... + 28959222.

Almost surely, 2^1390041528 is an apocalyptic number.

It is an amenable number.

1390041528 is an abundant number, since it is smaller than the sum of its proper divisors (2085062352).

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

1390041528 is a wasteful number, since it uses less digits than its factorization.

1390041528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57918406 (or 57918402 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 1390041528 is about 37283.2606943116. The cubic root of 1390041528 is about 1116.0301439681.

The spelling of 1390041528 in words is "one billion, three hundred ninety million, forty-one thousand, five hundred twenty-eight".