1390524672 has 36 divisors (see below), whose sum is σ = 3700825520. Its totient is φ = 463507968.

The previous prime is 1390524649. The next prime is 1390524677. The reversal of 1390524672 is 2764250931.

It is a self number, because there is not a number n which added to its sum of digits gives 1390524672.

It is not an unprimeable number, because it can be changed into a prime (1390524677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 904522 + ... + 906057.

Almost surely, 2^1390524672 is an apocalyptic number.

1390524672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1390524672 is an abundant number, since it is smaller than the sum of its proper divisors (2310300848).

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

1390524672 is an equidigital number, since it uses as much as digits as its factorization.

1390524672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810598 (or 1810584 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 1390524672 is about 37289.7395002969. The cubic root of 1390524672 is about 1116.1594304673.

The spelling of 1390524672 in words is "one billion, three hundred ninety million, five hundred twenty-four thousand, six hundred seventy-two".