213889736 has 16 divisors (see below), whose sum is σ = 401909040. Its totient is φ = 106714000.

The previous prime is 213889721. The next prime is 213889751. The reversal of 213889736 is 637988312.

213889736 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (213889721) and next prime (213889751).

It is a super-2 number, since 2×213889736² = 91497638332299392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24890 + ... + 32361.

It is an arithmetic number, because the mean of its divisors is an integer number (25119315).

Almost surely, 2^213889736 is an apocalyptic number.

It is an amenable number.

213889736 is a deficient number, since it is larger than the sum of its proper divisors (188019304).

213889736 is a wasteful number, since it uses less digits than its factorization.

213889736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57724 (or 57720 counting only the distinct ones).

The product of its digits is 435456, while the sum is 47.

The square root of 213889736 is about 14624.9696068060. The cubic root of 213889736 is about 598.0396538993.

The spelling of 213889736 in words is "two hundred thirteen million, eight hundred eighty-nine thousand, seven hundred thirty-six".