213923152 has 20 divisors (see below), whose sum is σ = 419725120. Its totient is φ = 105607008.

The previous prime is 213923137. The next prime is 213923153. The reversal of 213923152 is 251329312.

It is a super-2 number, since 2×213923152² = 91526229923230208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213923152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213923153) 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, 83358 + ... + 85885.

It is an arithmetic number, because the mean of its divisors is an integer number (20986256).

Almost surely, 2^213923152 is an apocalyptic number.

It is an amenable number.

213923152 is a deficient number, since it is larger than the sum of its proper divisors (205801968).

213923152 is a wasteful number, since it uses less digits than its factorization.

213923152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169330 (or 169324 counting only the distinct ones).

The product of its digits is 3240, while the sum is 28.

The square root of 213923152 is about 14626.1119919136. Note that the first 3 decimals coincide. The cubic root of 213923152 is about 598.0707961954.

The spelling of 213923152 in words is "two hundred thirteen million, nine hundred twenty-three thousand, one hundred fifty-two".