56306890 has 16 divisors (see below), whose sum is σ = 107314632. Its totient is φ = 21197824.

The previous prime is 56306879. The next prime is 56306891. The reversal of 56306890 is 9860365.

It can be written as a sum of positive squares in 4 ways, for example, as 43151761 + 13155129 = 6569^2 + 3627^2 .

It is a super-2 number, since 2×56306890² = 6340931722944200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56306891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165439 + ... + 165778.

Almost surely, 2^56306890 is an apocalyptic number.

56306890 is a deficient number, since it is larger than the sum of its proper divisors (51007742).

56306890 is a wasteful number, since it uses less digits than its factorization.

56306890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331241.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 56306890 is about 7503.7917081966. The cubic root of 56306890 is about 383.2838440627.

The spelling of 56306890 in words is "fifty-six million, three hundred six thousand, eight hundred ninety".