1072131904 has 14 divisors (see below), whose sum is σ = 2127511874. Its totient is φ = 536065920.

The previous prime is 1072131887. The next prime is 1072131937. The reversal of 1072131904 is 4091312701.

It can be written as a sum of positive squares in only one way, i.e., 748131904 + 324000000 = 27352^2 + 18000^2 .

It is a super-2 number, since 2×1072131904² = 2298933639149330432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8375967 + ... + 8376094.

Almost surely, 2^1072131904 is an apocalyptic number.

It is an amenable number.

1072131904 is a deficient number, since it is larger than the sum of its proper divisors (1055379970).

1072131904 is an equidigital number, since it uses as much as digits as its factorization.

1072131904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16752073 (or 16752063 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1072131904 is about 32743.4253553290. The cubic root of 1072131904 is about 1023.4879642217.

The spelling of 1072131904 in words is "one billion, seventy-two million, one hundred thirty-one thousand, nine hundred four".