212907464 has 64 divisors (see below), whose sum is σ = 523929600. Its totient is φ = 78580800.

The previous prime is 212907451. The next prime is 212907479. The reversal of 212907464 is 464709212.

It is a super-2 number, since 2×212907464² = 90659176453822592, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2609 + ... + 20799.

It is an arithmetic number, because the mean of its divisors is an integer number (8186400).

Almost surely, 2^212907464 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 212907464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261964800).

212907464 is an abundant number, since it is smaller than the sum of its proper divisors (311022136).

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

212907464 is a wasteful number, since it uses less digits than its factorization.

212907464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18234 (or 18230 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 212907464 is about 14591.3489438091. The cubic root of 212907464 is about 597.1227653299.

The spelling of 212907464 in words is "two hundred twelve million, nine hundred seven thousand, four hundred sixty-four".