212471620 has 12 divisors (see below), whose sum is σ = 446190444. Its totient is φ = 84988640.

The previous prime is 212471591. The next prime is 212471653. The reversal of 212471620 is 26174212.

212471620 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 167340096 + 45131524 = 12936^2 + 6718^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5311771 + ... + 5311810.

It is an arithmetic number, because the mean of its divisors is an integer number (37182537).

Almost surely, 2^212471620 is an apocalyptic number.

212471620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212471620 is an abundant number, since it is smaller than the sum of its proper divisors (233718824).

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

212471620 is a wasteful number, since it uses less digits than its factorization.

212471620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10623590 (or 10623588 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 212471620 is about 14576.4062786408. The cubic root of 212471620 is about 596.7150292492.

The spelling of 212471620 in words is "two hundred twelve million, four hundred seventy-one thousand, six hundred twenty".