1520730464 has 24 divisors (see below), whose sum is σ = 3266115048. Its totient is φ = 691240960.

The previous prime is 1520730457. The next prime is 1520730481. The reversal of 1520730464 is 4640370251.

It is a super-2 number, since 2×1520730464² = 4625242288275310592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1520730464.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2159777 + ... + 2160480.

It is an arithmetic number, because the mean of its divisors is an integer number (136088127).

Almost surely, 2^1520730464 is an apocalyptic number.

It is an amenable number.

1520730464 is an abundant number, since it is smaller than the sum of its proper divisors (1745384584).

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

1520730464 is a wasteful number, since it uses less digits than its factorization.

1520730464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4320278 (or 4320270 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 1520730464 is about 38996.5442571518. The cubic root of 1520730464 is about 1149.9635688522.

The spelling of 1520730464 in words is "one billion, five hundred twenty million, seven hundred thirty thousand, four hundred sixty-four".