212153270 has 64 divisors (see below), whose sum is σ = 462672000. Its totient is φ = 68490240.

The previous prime is 212153269. The next prime is 212153273. The reversal of 212153270 is 72351212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212153273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81956 + ... + 84504.

It is an arithmetic number, because the mean of its divisors is an integer number (7229250).

Almost surely, 2^212153270 is an apocalyptic number.

212153270 is an abundant number, since it is smaller than the sum of its proper divisors (250518730).

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

212153270 is a wasteful number, since it uses less digits than its factorization.

212153270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 212153270 is about 14565.4821410072. The cubic root of 212153270 is about 596.4168573738.

The spelling of 212153270 in words is "two hundred twelve million, one hundred fifty-three thousand, two hundred seventy".