232991040 has 112 divisors (see below), whose sum is σ = 763706880. Its totient is φ = 60119040.

The previous prime is 232990997. The next prime is 232991041. The reversal of 232991040 is 40199232.

It is a super-3 number, since 3×232991040³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 232990989 and 232991007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232991041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25846 + ... + 33674.

Almost surely, 2^232991040 is an apocalyptic number.

232991040 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 232991040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381853440).

232991040 is an abundant number, since it is smaller than the sum of its proper divisors (530715840).

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

232991040 is a wasteful number, since it uses less digits than its factorization.

232991040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7880 (or 7870 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 232991040 is about 15264.0440250937. The cubic root of 232991040 is about 615.3370615818.

The spelling of 232991040 in words is "two hundred thirty-two million, nine hundred ninety-one thousand, forty".