234133640 has 32 divisors (see below), whose sum is σ = 567325080. Its totient is φ = 86449152.

The previous prime is 234133619. The next prime is 234133651. The reversal of 234133640 is 46331432.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 217208644 + 16924996 = 14738^2 + 4114^2 .

It is a super-2 number, since 2×234133640² = 109637122759299200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224609 + ... + 225648.

Almost surely, 2^234133640 is an apocalyptic number.

234133640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

234133640 is an abundant number, since it is smaller than the sum of its proper divisors (333191440).

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

234133640 is a wasteful number, since it uses less digits than its factorization.

234133640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450281 (or 450277 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 234133640 is about 15301.4260773302. The cubic root of 234133640 is about 616.3413032434.

The spelling of 234133640 in words is "two hundred thirty-four million, one hundred thirty-three thousand, six hundred forty".