1392884280 has 48 divisors (see below), whose sum is σ = 4526875080. Its totient is φ = 371435712.

The previous prime is 1392884263. The next prime is 1392884293. The reversal of 1392884280 is 824882931.

It is a super-2 number, since 2×1392884280² = 3880253234942236800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1934202 + ... + 1934921.

Almost surely, 2^1392884280 is an apocalyptic number.

1392884280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1392884280 is an abundant number, since it is smaller than the sum of its proper divisors (3133990800).

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

1392884280 is a wasteful number, since it uses less digits than its factorization.

1392884280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3869140 (or 3869133 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 1392884280 is about 37321.3649268083. The cubic root of 1392884280 is about 1116.7904178091.

The spelling of 1392884280 in words is "one billion, three hundred ninety-two million, eight hundred eighty-four thousand, two hundred eighty".