1556304480 has 72 divisors (see below), whose sum is σ = 5310893952. Its totient is φ = 415014144.

The previous prime is 1556304479. The next prime is 1556304521. The reversal of 1556304480 is 844036551.

It is a happy number.

1556304480 is a `hidden beast` number, since 15 + 5 + 630 + 4 + 4 + 8 + 0 = 666.

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 a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 538944 + ... + 541823.

It is an arithmetic number, because the mean of its divisors is an integer number (73762416).

Almost surely, 2^1556304480 is an apocalyptic number.

1556304480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1556304480 is an abundant number, since it is smaller than the sum of its proper divisors (3754589472).

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

1556304480 is a wasteful number, since it uses less digits than its factorization.

1556304480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080788 (or 1080777 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 1556304480 is about 39450.0250950491. The cubic root of 1556304480 is about 1158.8614671277.

The spelling of 1556304480 in words is "one billion, five hundred fifty-six million, three hundred four thousand, four hundred eighty".