56396778 has 8 divisors (see below), whose sum is σ = 112793568. Its totient is φ = 18798924.

The previous prime is 56396777. The next prime is 56396797. The reversal of 56396778 is 87769365.

It is a sphenic number, since it is the product of 3 distinct primes.

56396778 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 56396778.

It is not an unprimeable number, because it can be changed into a prime (56396777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4699726 + ... + 4699737.

It is an arithmetic number, because the mean of its divisors is an integer number (14099196).

Almost surely, 2^56396778 is an apocalyptic number.

56396778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

56396778 is a wasteful number, since it uses less digits than its factorization.

56396778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9399468.

The product of its digits is 1905120, while the sum is 51.

The square root of 56396778 is about 7509.7788249721. The cubic root of 56396778 is about 383.4876930120.

The spelling of 56396778 in words is "fifty-six million, three hundred ninety-six thousand, seven hundred seventy-eight".