232157688 has 96 divisors (see below), whose sum is σ = 691004160. Its totient is φ = 64774080.

The previous prime is 232157663. The next prime is 232157689. The reversal of 232157688 is 886751232.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232157689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48273 + ... + 52863.

It is an arithmetic number, because the mean of its divisors is an integer number (7197960).

Almost surely, 2^232157688 is an apocalyptic number.

232157688 is a gapful number since it is divisible by the number (28) 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 232157688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345502080).

232157688 is an abundant number, since it is smaller than the sum of its proper divisors (458846472).

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

232157688 is a wasteful number, since it uses less digits than its factorization.

232157688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4657 (or 4646 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 232157688 is about 15236.7216946428. The cubic root of 232157688 is about 614.6025484057.

It can be divided in two parts, 23215 and 7688, that added together give a palindrome (30903).

The spelling of 232157688 in words is "two hundred thirty-two million, one hundred fifty-seven thousand, six hundred eighty-eight".