1297401672 has 32 divisors (see below), whose sum is σ = 3706862400. Its totient is φ = 370686144.

The previous prime is 1297401667. The next prime is 1297401691. The reversal of 1297401672 is 2761047921.

It is a self number, because there is not a number n which added to its sum of digits gives 1297401672.

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, 3861147 + ... + 3861482.

It is an arithmetic number, because the mean of its divisors is an integer number (115839450).

Almost surely, 2^1297401672 is an apocalyptic number.

1297401672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1297401672 is an abundant number, since it is smaller than the sum of its proper divisors (2409460728).

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

1297401672 is a wasteful number, since it uses less digits than its factorization.

1297401672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7722645 (or 7722641 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 1297401672 is about 36019.4624057606. The cubic root of 1297401672 is about 1090.6652707270.

The spelling of 1297401672 in words is "one billion, two hundred ninety-seven million, four hundred one thousand, six hundred seventy-two".