213765500 has 48 divisors (see below), whose sum is σ = 502791744. Its totient is φ = 78926400.

The previous prime is 213765499. The next prime is 213765509. The reversal of 213765500 is 5567312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213765509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9944 + ... + 22943.

It is an arithmetic number, because the mean of its divisors is an integer number (10474828).

Almost surely, 2^213765500 is an apocalyptic number.

213765500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213765500 is an abundant number, since it is smaller than the sum of its proper divisors (289026244).

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

213765500 is a wasteful number, since it uses less digits than its factorization.

213765500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32919 (or 32907 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 213765500 is about 14620.7215964192. The cubic root of 213765500 is about 597.9238427566.

The spelling of 213765500 in words is "two hundred thirteen million, seven hundred sixty-five thousand, five hundred".