56219784 has 32 divisors (see below), whose sum is σ = 147948000. Its totient is φ = 17753472.

The previous prime is 56219753. The next prime is 56219789. The reversal of 56219784 is 48791265.

It is a super-2 number, since 2×56219784² = 6321328226013312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56219789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61189 + ... + 62100.

It is an arithmetic number, because the mean of its divisors is an integer number (4623375).

Almost surely, 2^56219784 is an apocalyptic number.

It is an amenable number.

56219784 is an abundant number, since it is smaller than the sum of its proper divisors (91728216).

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

56219784 is a wasteful number, since it uses less digits than its factorization.

56219784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123317 (or 123313 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 56219784 is about 7497.9853294068. The cubic root of 56219784 is about 383.0860970765.

The spelling of 56219784 in words is "fifty-six million, two hundred nineteen thousand, seven hundred eighty-four".