234442640 has 20 divisors (see below), whose sum is σ = 545079324. Its totient is φ = 93777024.

The previous prime is 234442613. The next prime is 234442661. The reversal of 234442640 is 46244432.

234442640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 114233344 + 120209296 = 10688^2 + 10964^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1465187 + ... + 1465346.

Almost surely, 2^234442640 is an apocalyptic number.

234442640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

234442640 is an abundant number, since it is smaller than the sum of its proper divisors (310636684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

234442640 is a wasteful number, since it uses less digits than its factorization.

234442640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2930546 (or 2930540 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

The square root of 234442640 is about 15311.5198461812. The cubic root of 234442640 is about 616.6123247301.

The spelling of 234442640 in words is "two hundred thirty-four million, four hundred forty-two thousand, six hundred forty".