213168928 has 24 divisors (see below), whose sum is σ = 479630592. Its totient is φ = 91358016.

The previous prime is 213168863. The next prime is 213168941. The reversal of 213168928 is 829861312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475600 + ... + 476047.

It is an arithmetic number, because the mean of its divisors is an integer number (19984608).

Almost surely, 2^213168928 is an apocalyptic number.

213168928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

213168928 is an abundant number, since it is smaller than the sum of its proper divisors (266461664).

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

213168928 is an equidigital number, since it uses as much as digits as its factorization.

213168928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951664 (or 951656 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 213168928 is about 14600.3057502232. The cubic root of 213168928 is about 597.3671003357.

The spelling of 213168928 in words is "two hundred thirteen million, one hundred sixty-eight thousand, nine hundred twenty-eight".