1398027972 has 48 divisors (see below), whose sum is σ = 3634348032. Its totient is φ = 414629280.

The previous prime is 1398027971. The next prime is 1398027973. The reversal of 1398027972 is 2797208931.

It is an interprime number because it is at equal distance from previous prime (1398027971) and next prime (1398027973).

It is not an unprimeable number, because it can be changed into a prime (1398027971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106468 + ... + 118875.

It is an arithmetic number, because the mean of its divisors is an integer number (75715584).

Almost surely, 2^1398027972 is an apocalyptic number.

1398027972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1398027972 is an abundant number, since it is smaller than the sum of its proper divisors (2236320060).

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

1398027972 is a wasteful number, since it uses less digits than its factorization.

1398027972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225408 (or 225406 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 1398027972 is about 37390.2122486621. The cubic root of 1398027972 is about 1118.1634367116.

The spelling of 1398027972 in words is "one billion, three hundred ninety-eight million, twenty-seven thousand, nine hundred seventy-two".