213454906 has 32 divisors (see below), whose sum is σ = 380090880. Its totient is φ = 87964800.

The previous prime is 213454889. The next prime is 213454909. The reversal of 213454906 is 609454312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (213454909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113151 + ... + 115021.

It is an arithmetic number, because the mean of its divisors is an integer number (11877840).

Almost surely, 2^213454906 is an apocalyptic number.

213454906 is a deficient number, since it is larger than the sum of its proper divisors (166635974).

213454906 is a wasteful number, since it uses less digits than its factorization.

213454906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 213454906 is about 14610.0960298008. The cubic root of 213454906 is about 597.6341147214.

The spelling of 213454906 in words is "two hundred thirteen million, four hundred fifty-four thousand, nine hundred six".