1390262472 has 48 divisors (see below), whose sum is σ = 3767222940. Its totient is φ = 463183488.

The previous prime is 1390262453. The next prime is 1390262479. The reversal of 1390262472 is 2742620931.

1390262472 is a `hidden beast` number, since 1 + 390 + 26 + 247 + 2 = 666.

1390262472 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1361167236 + 29095236 = 36894^2 + 5394^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1390262479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189138 + ... + 196350.

Almost surely, 2^1390262472 is an apocalyptic number.

1390262472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1390262472 is an abundant number, since it is smaller than the sum of its proper divisors (2376960468).

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

1390262472 is a wasteful number, since it uses less digits than its factorization.

1390262472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9902 (or 9895 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 1390262472 is about 37286.2236221369. The cubic root of 1390262472 is about 1116.0892710028.

The spelling of 1390262472 in words is "one billion, three hundred ninety million, two hundred sixty-two thousand, four hundred seventy-two".