212678680 has 32 divisors (see below), whose sum is σ = 479329200. Its totient is φ = 84928896.

The previous prime is 212678659. The next prime is 212678689. The reversal of 212678680 is 86876212.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212678689) 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, 21586 + ... + 29854.

Almost surely, 2^212678680 is an apocalyptic number.

212678680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212678680 is an abundant number, since it is smaller than the sum of its proper divisors (266650520).

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

212678680 is a wasteful number, since it uses less digits than its factorization.

212678680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8923 (or 8919 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 212678680 is about 14583.5071227740. The cubic root of 212678680 is about 596.9088052452.

The spelling of 212678680 in words is "two hundred twelve million, six hundred seventy-eight thousand, six hundred eighty".