213400726 has 32 divisors (see below), whose sum is σ = 402651648. Its totient is φ = 82400640.

The previous prime is 213400709. The next prime is 213400751. The reversal of 213400726 is 627004312.

213400726 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 213400726.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11271 + ... + 23533.

It is an arithmetic number, because the mean of its divisors is an integer number (12582864).

Almost surely, 2^213400726 is an apocalyptic number.

213400726 is a deficient number, since it is larger than the sum of its proper divisors (189250922).

213400726 is a wasteful number, since it uses less digits than its factorization.

213400726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12396.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 213400726 is about 14608.2417148677. The cubic root of 213400726 is about 597.5835457950.

The spelling of 213400726 in words is "two hundred thirteen million, four hundred thousand, seven hundred twenty-six".