213976 has 16 divisors (see below), whose sum is σ = 458640. Its totient is φ = 91680.

The previous prime is 213973. The next prime is 213977. The reversal of 213976 is 679312.

213976 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×213976³ = 29391141173334528, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213973) 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, 1855 + ... + 1966.

It is an arithmetic number, because the mean of its divisors is an integer number (28665).

2²¹³⁹⁷⁶ is an apocalyptic number.

It is an amenable number.

213976 is an abundant number, since it is smaller than the sum of its proper divisors (244664).

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

213976 is a wasteful number, since it uses less digits than its factorization.

213976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3834 (or 3830 counting only the distinct ones).

The product of its digits is 2268, while the sum is 28.

The square root of 213976 is about 462.5753992594. The cubic root of 213976 is about 59.8120041672.

The spelling of 213976 in words is "two hundred thirteen thousand, nine hundred seventy-six".