234021290 has 16 divisors (see below), whose sum is σ = 443409120. Its totient is φ = 88681680.

The previous prime is 234021259. The next prime is 234021299. The reversal of 234021290 is 92120432.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (234021299) 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, 615656 + ... + 616035.

It is an arithmetic number, because the mean of its divisors is an integer number (27713070).

Almost surely, 2^234021290 is an apocalyptic number.

234021290 is a deficient number, since it is larger than the sum of its proper divisors (209387830).

234021290 is a wasteful number, since it uses less digits than its factorization.

234021290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231717.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 234021290 is about 15297.7544103702. The cubic root of 234021290 is about 616.2427028254.

The spelling of 234021290 in words is "two hundred thirty-four million, twenty-one thousand, two hundred ninety".