234345657 has 32 divisors (see below), whose sum is σ = 393530368. Its totient is φ = 120730176.

The previous prime is 234345641. The next prime is 234345667. The reversal of 234345657 is 756543432.

It is not a de Polignac number, because 234345657 - 2⁴ = 234345641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (234345637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1758 + ... + 21720.

It is an arithmetic number, because the mean of its divisors is an integer number (12297824).

Almost surely, 2^234345657 is an apocalyptic number.

It is an amenable number.

234345657 is a deficient number, since it is larger than the sum of its proper divisors (159184711).

234345657 is a wasteful number, since it uses less digits than its factorization.

234345657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20029.

The product of its digits is 302400, while the sum is 39.

The square root of 234345657 is about 15308.3525240308. The cubic root of 234345657 is about 616.5272873538.

The spelling of 234345657 in words is "two hundred thirty-four million, three hundred forty-five thousand, six hundred fifty-seven".