213998976 has 128 divisors (see below), whose sum is σ = 665040000. Its totient is φ = 67557888.

The previous prime is 213998909. The next prime is 213998999. The reversal of 213998976 is 679899312.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64035 + ... + 67293.

It is an arithmetic number, because the mean of its divisors is an integer number (5195625).

Almost surely, 2^213998976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213998976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332520000).

213998976 is an abundant number, since it is smaller than the sum of its proper divisors (451041024).

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

213998976 is a wasteful number, since it uses less digits than its factorization.

213998976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3301 (or 3283 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 213998976 is about 14628.7038386865. The cubic root of 213998976 is about 598.1414489241.

The spelling of 213998976 in words is "two hundred thirteen million, nine hundred ninety-eight thousand, nine hundred seventy-six".