56228778 has 24 divisors (see below), whose sum is σ = 124663968. Its totient is φ = 18306792.

The previous prime is 56228759. The next prime is 56228797. The reversal of 56228778 is 87782265.

56228778 is a `hidden beast` number, since 562 + 2 + 87 + 7 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (56228759) and next prime (56228797).

It is a super-3 number, since 3×56228778³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35550 + ... + 37097.

It is an arithmetic number, because the mean of its divisors is an integer number (5194332).

Almost surely, 2^56228778 is an apocalyptic number.

56228778 is an abundant number, since it is smaller than the sum of its proper divisors (68435190).

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

56228778 is a wasteful number, since it uses less digits than its factorization.

56228778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72698 (or 72695 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 56228778 is about 7498.5850665309. The cubic root of 56228778 is about 383.1065245986.

It can be divided in two parts, 5622 and 8778, that added together give a square (14400 = 120²).

The spelling of 56228778 in words is "fifty-six million, two hundred twenty-eight thousand, seven hundred seventy-eight".