213720850 has 72 divisors (see below), whose sum is σ = 468438768. Its totient is φ = 72324000.

The previous prime is 213720847. The next prime is 213720869. The reversal of 213720850 is 58027312.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 202825 + ... + 203875.

It is an arithmetic number, because the mean of its divisors is an integer number (6506094).

Almost surely, 2^213720850 is an apocalyptic number.

213720850 is an abundant number, since it is smaller than the sum of its proper divisors (254717918).

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

213720850 is a wasteful number, since it uses less digits than its factorization.

213720850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160 (or 1148 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 213720850 is about 14619.1945742575. The cubic root of 213720850 is about 597.8822096608.

The spelling of 213720850 in words is "two hundred thirteen million, seven hundred twenty thousand, eight hundred fifty".