56426740 has 24 divisors (see below), whose sum is σ = 125467272. Its totient is φ = 21242880.

The previous prime is 56426731. The next prime is 56426761. The reversal of 56426740 is 4762465.

It can be written as a sum of positive squares in 4 ways, for example, as 26440164 + 29986576 = 5142^2 + 5476^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 56426696 and 56426705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82641 + ... + 83320.

It is an arithmetic number, because the mean of its divisors is an integer number (5227803).

Almost surely, 2^56426740 is an apocalyptic number.

It is an amenable number.

56426740 is an abundant number, since it is smaller than the sum of its proper divisors (69040532).

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

56426740 is a wasteful number, since it uses less digits than its factorization.

56426740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165987 (or 165985 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 56426740 is about 7511.7734257631. The cubic root of 56426740 is about 383.5555930143. Note that the first 4 decimals are identical.

The spelling of 56426740 in words is "fifty-six million, four hundred twenty-six thousand, seven hundred forty".