213609290 has 16 divisors (see below), whose sum is σ = 384985440. Its totient is φ = 85335120.

The previous prime is 213609287. The next prime is 213609307. The reversal of 213609290 is 92906312.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5060 + ... + 21279.

It is an arithmetic number, because the mean of its divisors is an integer number (24061590).

Almost surely, 2^213609290 is an apocalyptic number.

213609290 is a deficient number, since it is larger than the sum of its proper divisors (171376150).

213609290 is a wasteful number, since it uses less digits than its factorization.

213609290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27157.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 213609290 is about 14615.3785445332. The cubic root of 213609290 is about 597.7781621799.

The spelling of 213609290 in words is "two hundred thirteen million, six hundred nine thousand, two hundred ninety".