1597272420 has 24 divisors (see below), whose sum is σ = 4472362944. Its totient is φ = 425939296.

The previous prime is 1597272419. The next prime is 1597272431. The reversal of 1597272420 is 242727951.

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, 13310544 + ... + 13310663.

It is an arithmetic number, because the mean of its divisors is an integer number (186348456).

Almost surely, 2^1597272420 is an apocalyptic number.

1597272420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1597272420 is an abundant number, since it is smaller than the sum of its proper divisors (2875090524).

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

1597272420 is a wasteful number, since it uses less digits than its factorization.

1597272420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26621219 (or 26621217 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 1597272420 is about 39965.8907069516. The cubic root of 1597272420 is about 1168.9420928985.

The spelling of 1597272420 in words is "one billion, five hundred ninety-seven million, two hundred seventy-two thousand, four hundred twenty".