213282740 has 24 divisors (see below), whose sum is σ = 488611872. Its totient is φ = 77557280.

The previous prime is 213282739. The next prime is 213282761. The reversal of 213282740 is 47282312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484514 + ... + 484953.

It is an arithmetic number, because the mean of its divisors is an integer number (20358828).

Almost surely, 2^213282740 is an apocalyptic number.

213282740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213282740 is an abundant number, since it is smaller than the sum of its proper divisors (275329132).

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

213282740 is a wasteful number, since it uses less digits than its factorization.

213282740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969487 (or 969485 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 213282740 is about 14604.2028197365. The cubic root of 213282740 is about 597.4733938889.

The spelling of 213282740 in words is "two hundred thirteen million, two hundred eighty-two thousand, seven hundred forty".