234574640 has 20 divisors (see below), whose sum is σ = 545386224. Its totient is φ = 93829824.

The previous prime is 234574607. The next prime is 234574643. The reversal of 234574640 is 46475432.

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

It is a super-2 number, since 2×234574640² = 110050523462259200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 234574640.

It is not an unprimeable number, because it can be changed into a prime (234574643) 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, 1466012 + ... + 1466171.

Almost surely, 2^234574640 is an apocalyptic number.

234574640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

234574640 is an abundant number, since it is smaller than the sum of its proper divisors (310811584).

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

234574640 is a wasteful number, since it uses less digits than its factorization.

234574640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2932196 (or 2932190 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 35.

The square root of 234574640 is about 15315.8297196071. The cubic root of 234574640 is about 616.7280283068.

The spelling of 234574640 in words is "two hundred thirty-four million, five hundred seventy-four thousand, six hundred forty".