228920870 has 16 divisors (see below), whose sum is σ = 412496928. Its totient is φ = 91470720.

The previous prime is 228920851. The next prime is 228920891. The reversal of 228920870 is 78029822.

It is a congruent number.

It is an unprimeable number.

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, 1946 + ... + 21485.

It is an arithmetic number, because the mean of its divisors is an integer number (25781058).

Almost surely, 2^228920870 is an apocalyptic number.

228920870 is a deficient number, since it is larger than the sum of its proper divisors (183576058).

228920870 is a wasteful number, since it uses less digits than its factorization.

228920870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24415.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 228920870 is about 15130.1311957299. The cubic root of 228920870 is about 611.7328404460.

The spelling of 228920870 in words is "two hundred twenty-eight million, nine hundred twenty thousand, eight hundred seventy".