56423420 has 24 divisors (see below), whose sum is σ = 118679904. Its totient is φ = 22533056.

The previous prime is 56423417. The next prime is 56423449. The reversal of 56423420 is 2432465.

It is a self number, because there is not a number n which added to its sum of digits gives 56423420.

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, 12962 + ... + 16758.

It is an arithmetic number, because the mean of its divisors is an integer number (4944996).

Almost surely, 2^56423420 is an apocalyptic number.

It is an amenable number.

56423420 is an abundant number, since it is smaller than the sum of its proper divisors (62256484).

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

56423420 is a wasteful number, since it uses less digits than its factorization.

56423420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4549 (or 4547 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 56423420 is about 7511.5524360814. The cubic root of 56423420 is about 383.5480704016.

Adding to 56423420 its reverse (2432465), we get a palindrome (58855885).

The spelling of 56423420 in words is "fifty-six million, four hundred twenty-three thousand, four hundred twenty".