212672420 has 12 divisors (see below), whose sum is σ = 446612124. Its totient is φ = 85068960.

The previous prime is 212672417. The next prime is 212672423. The reversal of 212672420 is 24276212.

It is an interprime number because it is at equal distance from previous prime (212672417) and next prime (212672423).

It can be written as a sum of positive squares in 2 ways, for example, as 128913316 + 83759104 = 11354^2 + 9152^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212672420.

It is not an unprimeable number, because it can be changed into a prime (212672423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5316791 + ... + 5316830.

It is an arithmetic number, because the mean of its divisors is an integer number (37217677).

Almost surely, 2^212672420 is an apocalyptic number.

212672420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212672420 is an abundant number, since it is smaller than the sum of its proper divisors (233939704).

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

212672420 is a wasteful number, since it uses less digits than its factorization.

212672420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10633630 (or 10633628 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 212672420 is about 14583.2924951809. The cubic root of 212672420 is about 596.9029487018.

The spelling of 212672420 in words is "two hundred twelve million, six hundred seventy-two thousand, four hundred twenty".