234454640 has 160 divisors (see below), whose sum is σ = 659957760. Its totient is φ = 75727872.

The previous prime is 234454639. The next prime is 234454691. The reversal of 234454640 is 46454432.

It is a junction number, because it is equal to n+sod(n) for n = 234454597 and 234454606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1403837 + ... + 1404003.

It is an arithmetic number, because the mean of its divisors is an integer number (4124736).

Almost surely, 2^234454640 is an apocalyptic number.

234454640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 234454640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329978880).

234454640 is an abundant number, since it is smaller than the sum of its proper divisors (425503120).

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

234454640 is a wasteful number, since it uses less digits than its factorization.

234454640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 32.

The square root of 234454640 is about 15311.9117029847. The cubic root of 234454640 is about 616.6228450315.

The spelling of 234454640 in words is "two hundred thirty-four million, four hundred fifty-four thousand, six hundred forty".