212682280 has 16 divisors (see below), whose sum is σ = 478535220. Its totient is φ = 85072896.

The previous prime is 212682277. The next prime is 212682287. The reversal of 212682280 is 82286212.

It can be written as a sum of positive squares in 2 ways, for example, as 212051844 + 630436 = 14562^2 + 794^2 .

It is not an unprimeable number, because it can be changed into a prime (212682287) 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, 2658489 + ... + 2658568.

Almost surely, 2^212682280 is an apocalyptic number.

212682280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212682280 is an abundant number, since it is smaller than the sum of its proper divisors (265852940).

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

212682280 is a wasteful number, since it uses less digits than its factorization.

212682280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5317068 (or 5317064 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 212682280 is about 14583.6305493522. The cubic root of 212682280 is about 596.9121731734.

The spelling of 212682280 in words is "two hundred twelve million, six hundred eighty-two thousand, two hundred eighty".