56009436 has 96 divisors (see below), whose sum is σ = 156291072. Its totient is φ = 15275520.

The previous prime is 56009423. The next prime is 56009461. The reversal of 56009436 is 63490065.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 56009397 and 56009406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 356670 + ... + 356826.

It is an arithmetic number, because the mean of its divisors is an integer number (1628032).

Almost surely, 2^56009436 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 56009436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78145536).

56009436 is an abundant number, since it is smaller than the sum of its proper divisors (100281636).

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

56009436 is a wasteful number, since it uses less digits than its factorization.

56009436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 56009436 is about 7483.9452162613. The cubic root of 56009436 is about 382.6077239413.

The spelling of 56009436 in words is "fifty-six million, nine thousand, four hundred thirty-six".