213728902 has 12 divisors (see below), whose sum is σ = 322974756. Its totient is φ = 106076460.

The previous prime is 213728897. The next prime is 213728951. The reversal of 213728902 is 209827312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35877 + ... + 41407.

It is an arithmetic number, because the mean of its divisors is an integer number (26914563).

Almost surely, 2^213728902 is an apocalyptic number.

213728902 is a deficient number, since it is larger than the sum of its proper divisors (109245854).

213728902 is an equidigital number, since it uses as much as digits as its factorization.

213728902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5811 (or 5672 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 213728902 is about 14619.4699630322. The cubic root of 213728902 is about 597.8897180331.

The spelling of 213728902 in words is "two hundred thirteen million, seven hundred twenty-eight thousand, nine hundred two".