213297390 has 48 divisors (see below), whose sum is σ = 563986800. Its totient is φ = 55913856.

The previous prime is 213297367. The next prime is 213297437. The reversal of 213297390 is 93792312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14775 + ... + 25394.

It is an arithmetic number, because the mean of its divisors is an integer number (11749725).

Almost surely, 2^213297390 is an apocalyptic number.

213297390 is an abundant number, since it is smaller than the sum of its proper divisors (350689410).

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

213297390 is a wasteful number, since it uses less digits than its factorization.

213297390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40241 (or 40238 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 213297390 is about 14604.7043790691. The cubic root of 213297390 is about 597.4870733593.

The spelling of 213297390 in words is "two hundred thirteen million, two hundred ninety-seven thousand, three hundred ninety".