232778287 has 8 divisors (see below), whose sum is σ = 274614272. Its totient is φ = 193087800.

The previous prime is 232778281. The next prime is 232778303. The reversal of 232778287 is 782877232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 232778287 - 2⁷ = 232778159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232778281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536139 + ... + 536572.

It is an arithmetic number, because the mean of its divisors is an integer number (34326784).

Almost surely, 2^232778287 is an apocalyptic number.

232778287 is a deficient number, since it is larger than the sum of its proper divisors (41835985).

232778287 is a wasteful number, since it uses less digits than its factorization.

232778287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072749.

The product of its digits is 526848, while the sum is 46.

The square root of 232778287 is about 15257.0733432071. The cubic root of 232778287 is about 615.1497086349.

The spelling of 232778287 in words is "two hundred thirty-two million, seven hundred seventy-eight thousand, two hundred eighty-seven".