46991520 has 72 divisors (see below), whose sum is σ = 160363476. Its totient is φ = 12530688.

The previous prime is 46991489. The next prime is 46991531. The reversal of 46991520 is 2519964.

46991520 is a `hidden beast` number, since 46 + 9 + 91 + 520 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 46949904 + 41616 = 6852^2 + 204^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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

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, 14877 + ... + 17756.

Almost surely, 2^46991520 is an apocalyptic number.

46991520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

46991520 is an abundant number, since it is smaller than the sum of its proper divisors (113371956).

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

46991520 is a wasteful number, since it uses less digits than its factorization.

46991520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32654 (or 32643 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 46991520 is about 6855.0361049377. The cubic root of 46991520 is about 360.8609025629.

The spelling of 46991520 in words is "forty-six million, nine hundred ninety-one thousand, five hundred twenty".