56189890 has 16 divisors (see below), whose sum is σ = 101710080. Its totient is φ = 22349680.

The previous prime is 56189867. The next prime is 56189893. The reversal of 56189890 is 9898165.

56189890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 56189890.

It is not an unprimeable number, because it can be changed into a prime (56189893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13906 + ... + 17485.

It is an arithmetic number, because the mean of its divisors is an integer number (6356880).

Almost surely, 2^56189890 is an apocalyptic number.

56189890 is a deficient number, since it is larger than the sum of its proper divisors (45520190).

56189890 is a wasteful number, since it uses less digits than its factorization.

56189890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31577.

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 56189890 is about 7495.9915955129. The cubic root of 56189890 is about 383.0181850037.

The spelling of 56189890 in words is "fifty-six million, one hundred eighty-nine thousand, eight hundred ninety".