234379640 has 64 divisors (see below), whose sum is σ = 583256160. Its totient is φ = 84049920.

The previous prime is 234379619. The next prime is 234379699. The reversal of 234379640 is 46973432.

It is a junction number, because it is equal to n+sod(n) for n = 234379594 and 234379603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28472 + ... + 35768.

Almost surely, 2^234379640 is an apocalyptic number.

234379640 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 234379640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291628080).

234379640 is an abundant number, since it is smaller than the sum of its proper divisors (348876520).

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

234379640 is a wasteful number, since it uses less digits than its factorization.

234379640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7392 (or 7388 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 38.

The square root of 234379640 is about 15309.4624334103. The cubic root of 234379640 is about 616.5570872576.

The spelling of 234379640 in words is "two hundred thirty-four million, three hundred seventy-nine thousand, six hundred forty".