56904780 has 96 divisors (see below), whose sum is σ = 172440576. Its totient is φ = 13966336.

The previous prime is 56904773. The next prime is 56904787. The reversal of 56904780 is 8740965.

It is an interprime number because it is at equal distance from previous prime (56904773) and next prime (56904787).

It is not an unprimeable number, because it can be changed into a prime (56904787) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 47347 + ... + 48533.

It is an arithmetic number, because the mean of its divisors is an integer number (1796256).

Almost surely, 2^56904780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56904780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86220288).

56904780 is an abundant number, since it is smaller than the sum of its proper divisors (115535796).

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

56904780 is a wasteful number, since it uses less digits than its factorization.

56904780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 56904780 is about 7543.5257008908. The cubic root of 56904780 is about 384.6356929379.

The spelling of 56904780 in words is "fifty-six million, nine hundred four thousand, seven hundred eighty".