56650440 has 128 divisors (see below), whose sum is σ = 211921920. Its totient is φ = 11769600.

The previous prime is 56650439. The next prime is 56650453. The reversal of 56650440 is 4405665.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 56650398 and 56650407.

It is an unprimeable number.

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, 6175 + ... + 12305.

It is an arithmetic number, because the mean of its divisors is an integer number (1655640).

Almost surely, 2^56650440 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 56650440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105960960).

56650440 is an abundant number, since it is smaller than the sum of its proper divisors (155271480).

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

56650440 is a wasteful number, since it uses less digits than its factorization.

56650440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6163 (or 6159 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 56650440 is about 7526.6486566067. The cubic root of 56650440 is about 384.0617847633.

The spelling of 56650440 in words is "fifty-six million, six hundred fifty thousand, four hundred forty".