56398860 has 144 divisors (see below), whose sum is σ = 207095616. Its totient is φ = 12128256.

The previous prime is 56398847. The next prime is 56398879. The reversal of 56398860 is 6889365.

56398860 = T₂₂₉ + T₂₃₀ + ... + T₇₀₄.

56398860 is a `hidden beast` number, since 5 + 639 + 8 + 8 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 47 ways as a sum of consecutive naturals, for example, 20104 + ... + 22736.

It is an arithmetic number, because the mean of its divisors is an integer number (1438164).

Almost surely, 2^56398860 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 56398860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103547808).

56398860 is an abundant number, since it is smaller than the sum of its proper divisors (150696756).

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

56398860 is a wasteful number, since it uses less digits than its factorization.

56398860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2672 (or 2667 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 56398860 is about 7509.9174429550. The cubic root of 56398860 is about 383.4924120260.

The spelling of 56398860 in words is "fifty-six million, three hundred ninety-eight thousand, eight hundred sixty".