213106772 has 24 divisors (see below), whose sum is σ = 388523520. Its totient is φ = 102163680.

The previous prime is 213106771. The next prime is 213106801. The reversal of 213106772 is 277601312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213106771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5633 + ... + 21399.

It is an arithmetic number, because the mean of its divisors is an integer number (16188480).

Almost surely, 2^213106772 is an apocalyptic number.

It is an amenable number.

213106772 is a deficient number, since it is larger than the sum of its proper divisors (175416748).

213106772 is a wasteful number, since it uses less digits than its factorization.

213106772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15911 (or 15909 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 213106772 is about 14598.1770094762. The cubic root of 213106772 is about 597.3090344014.

It can be divided in two parts, 21310 and 6772, that added together give a palindrome (28082).

The spelling of 213106772 in words is "two hundred thirteen million, one hundred six thousand, seven hundred seventy-two".