228952780 has 24 divisors (see below), whose sum is σ = 549487008. Its totient is φ = 78498048.

The previous prime is 228952771. The next prime is 228952817. The reversal of 228952780 is 87259822.

228952780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 817549 + ... + 817828.

It is an arithmetic number, because the mean of its divisors is an integer number (22895292).

Almost surely, 2^228952780 is an apocalyptic number.

228952780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228952780 is an abundant number, since it is smaller than the sum of its proper divisors (320534228).

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

228952780 is a wasteful number, since it uses less digits than its factorization.

228952780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635393 (or 1635391 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 228952780 is about 15131.1856772693. The cubic root of 228952780 is about 611.7612629135.

The spelling of 228952780 in words is "two hundred twenty-eight million, nine hundred fifty-two thousand, seven hundred eighty".