232878640 has 40 divisors (see below), whose sum is σ = 543067920. Its totient is φ = 92871936.

The previous prime is 232878623. The next prime is 232878641. The reversal of 232878640 is 46878232.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 232878593 and 232878602.

It is not an unprimeable number, because it can be changed into a prime (232878641) by changing a digit.

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, 23566 + ... + 31954.

It is an arithmetic number, because the mean of its divisors is an integer number (13576698).

Almost surely, 2^232878640 is an apocalyptic number.

232878640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

232878640 is an abundant number, since it is smaller than the sum of its proper divisors (310189280).

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

232878640 is a wasteful number, since it uses less digits than its factorization.

232878640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8749 (or 8743 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 232878640 is about 15260.3617257259. The cubic root of 232878640 is about 615.2380949566.

The spelling of 232878640 in words is "two hundred thirty-two million, eight hundred seventy-eight thousand, six hundred forty".