212628220 has 24 divisors (see below), whose sum is σ = 510308064. Its totient is φ = 72901056.

The previous prime is 212628217. The next prime is 212628223. The reversal of 212628220 is 22826212.

It is an interprime number because it is at equal distance from previous prime (212628217) and next prime (212628223).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212628223) 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, 759247 + ... + 759526.

It is an arithmetic number, because the mean of its divisors is an integer number (21262836).

Almost surely, 2^212628220 is an apocalyptic number.

212628220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212628220 is an abundant number, since it is smaller than the sum of its proper divisors (297679844).

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

212628220 is a wasteful number, since it uses less digits than its factorization.

212628220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518789 (or 1518787 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 212628220 is about 14581.7769836190. The cubic root of 212628220 is about 596.8615941179.

The spelling of 212628220 in words is "two hundred twelve million, six hundred twenty-eight thousand, two hundred twenty".