1372439340 has 36 divisors (see below), whose sum is σ = 4163066544. Its totient is φ = 365983776.

The previous prime is 1372439333. The next prime is 1372439357. The reversal of 1372439340 is 439342731.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 1372439295 and 1372439304.

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, 3812152 + ... + 3812511.

Almost surely, 2^1372439340 is an apocalyptic number.

1372439340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1372439340 is an abundant number, since it is smaller than the sum of its proper divisors (2790627204).

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

1372439340 is a wasteful number, since it uses less digits than its factorization.

1372439340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7624678 (or 7624673 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 1372439340 is about 37046.4484127696. The cubic root of 1372439340 is about 1111.2993306550.

The spelling of 1372439340 in words is "one billion, three hundred seventy-two million, four hundred thirty-nine thousand, three hundred forty".