213457800 has 48 divisors (see below), whose sum is σ = 661721040. Its totient is φ = 56921920.

The previous prime is 213457789. The next prime is 213457889. The reversal of 213457800 is 8754312.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 11 ways as a sum of consecutive naturals, for example, 177282 + ... + 178481.

It is an arithmetic number, because the mean of its divisors is an integer number (13785855).

Almost surely, 2^213457800 is an apocalyptic number.

213457800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213457800 is an abundant number, since it is smaller than the sum of its proper divisors (448263240).

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

213457800 is a wasteful number, since it uses less digits than its factorization.

213457800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355782 (or 355773 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 213457800 is about 14610.1950705663. The cubic root of 213457800 is about 597.6368155968.

The spelling of 213457800 in words is "two hundred thirteen million, four hundred fifty-seven thousand, eight hundred".