1072815990 has 32 divisors (see below), whose sum is σ = 2595041280. Its totient is φ = 283830624.

The previous prime is 1072815949. The next prime is 1072816013. The reversal of 1072815990 is 995182701.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136980 + ... + 144599.

It is an arithmetic number, because the mean of its divisors is an integer number (81095040).

Almost surely, 2^1072815990 is an apocalyptic number.

1072815990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1072815990 is an abundant number, since it is smaller than the sum of its proper divisors (1522225290).

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

1072815990 is a wasteful number, since it uses less digits than its factorization.

1072815990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281716.

The product of its (nonzero) digits is 45360, while the sum is 42.

The square root of 1072815990 is about 32753.8698476989. The cubic root of 1072815990 is about 1023.7056006661.

The spelling of 1072815990 in words is "one billion, seventy-two million, eight hundred fifteen thousand, nine hundred ninety".