1478732520 has 32 divisors (see below), whose sum is σ = 4436197920. Its totient is φ = 394328640.

The previous prime is 1478732503. The next prime is 1478732531. The reversal of 1478732520 is 252378741.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6161266 + ... + 6161505.

It is an arithmetic number, because the mean of its divisors is an integer number (138631185).

Almost surely, 2^1478732520 is an apocalyptic number.

1478732520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1478732520 is an abundant number, since it is smaller than the sum of its proper divisors (2957465400).

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

1478732520 is a wasteful number, since it uses less digits than its factorization.

1478732520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12322785 (or 12322781 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 1478732520 is about 38454.2913079932. The cubic root of 1478732520 is about 1139.2784291842.

The spelling of 1478732520 in words is "one billion, four hundred seventy-eight million, seven hundred thirty-two thousand, five hundred twenty".