213020860 has 24 divisors (see below), whose sum is σ = 481755456. Its totient is φ = 78653760.

The previous prime is 213020851. The next prime is 213020861. The reversal of 213020860 is 68020312.

213020860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213020861) 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, 409396 + ... + 409915.

It is an arithmetic number, because the mean of its divisors is an integer number (20073144).

Almost surely, 2^213020860 is an apocalyptic number.

213020860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213020860 is an abundant number, since it is smaller than the sum of its proper divisors (268734596).

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

213020860 is a wasteful number, since it uses less digits than its factorization.

213020860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819333 (or 819331 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 213020860 is about 14595.2341536544. The cubic root of 213020860 is about 597.2287570977.

The spelling of 213020860 in words is "two hundred thirteen million, twenty thousand, eight hundred sixty".