234436643 has 4 divisors (see below), whose sum is σ = 267927600. Its totient is φ = 200945688.

The previous prime is 234436637. The next prime is 234436661. The reversal of 234436643 is 346634432.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 234436643 - 2¹⁶ = 234371107 is a prime.

It is a super-2 number, since 2×234436643² = 109921079162218898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (234436633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16745468 + ... + 16745481.

It is an arithmetic number, because the mean of its divisors is an integer number (66981900).

Almost surely, 2^234436643 is an apocalyptic number.

234436643 is a deficient number, since it is larger than the sum of its proper divisors (33490957).

234436643 is an equidigital number, since it uses as much as digits as its factorization.

234436643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33490956.

The product of its digits is 124416, while the sum is 35.

The square root of 234436643 is about 15311.3240119854. The cubic root of 234436643 is about 616.6070670750.

The spelling of 234436643 in words is "two hundred thirty-four million, four hundred thirty-six thousand, six hundred forty-three".