233138780 has 24 divisors (see below), whose sum is σ = 559533408. Its totient is φ = 79933248.

The previous prime is 233138777. The next prime is 233138827. The reversal of 233138780 is 87831332.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 233138780.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 832499 + ... + 832778.

It is an arithmetic number, because the mean of its divisors is an integer number (23313892).

Almost surely, 2^233138780 is an apocalyptic number.

233138780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233138780 is an abundant number, since it is smaller than the sum of its proper divisors (326394628).

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

233138780 is a wasteful number, since it uses less digits than its factorization.

233138780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665293 (or 1665291 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 233138780 is about 15268.8827358127. The cubic root of 233138780 is about 615.4670961801.

The spelling of 233138780 in words is "two hundred thirty-three million, one hundred thirty-eight thousand, seven hundred eighty".