213252020 has 24 divisors (see below), whose sum is σ = 448326144. Its totient is φ = 85206176.

The previous prime is 213251999. The next prime is 213252023. The reversal of 213252020 is 20252312.

It is a self number, because there is not a number n which added to its sum of digits gives 213252020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213252023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14237 + ... + 25083.

It is an arithmetic number, because the mean of its divisors is an integer number (18680256).

Almost surely, 2^213252020 is an apocalyptic number.

213252020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213252020 is an abundant number, since it is smaller than the sum of its proper divisors (235074124).

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

213252020 is a wasteful number, since it uses less digits than its factorization.

213252020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11839 (or 11837 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 213252020 is about 14603.1510298291. The cubic root of 213252020 is about 597.4447069857. Note that the first 3 decimals are identical.

The spelling of 213252020 in words is "two hundred thirteen million, two hundred fifty-two thousand, twenty".