212990464 has 80 divisors (see below), whose sum is σ = 445471488. Its totient is φ = 101650432.

The previous prime is 212990461. The next prime is 212990473. The reversal of 212990464 is 464099212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (212990461) 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, 1275309 + ... + 1275475.

Almost surely, 2^212990464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212990464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222735744).

212990464 is an abundant number, since it is smaller than the sum of its proper divisors (232481024).

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

212990464 is an equidigital number, since it uses as much as digits as its factorization.

212990464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 212990464 is about 14594.1928176929. The cubic root of 212990464 is about 597.2003495061.

The spelling of 212990464 in words is "two hundred twelve million, nine hundred ninety thousand, four hundred sixty-four".