213066920 has 32 divisors (see below), whose sum is σ = 522983520. Its totient is φ = 77478720.

The previous prime is 213066913. The next prime is 213066923. The reversal of 213066920 is 29660312.

It is not an unprimeable number, because it can be changed into a prime (213066923) 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, 241682 + ... + 242561.

It is an arithmetic number, because the mean of its divisors is an integer number (16343235).

Almost surely, 2^213066920 is an apocalyptic number.

213066920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213066920 is an abundant number, since it is smaller than the sum of its proper divisors (309916600).

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

213066920 is a wasteful number, since it uses less digits than its factorization.

213066920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484265 (or 484261 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 213066920 is about 14596.8119807032. The cubic root of 213066920 is about 597.2717988514.

The spelling of 213066920 in words is "two hundred thirteen million, sixty-six thousand, nine hundred twenty".