230778477 has 40 divisors (see below), whose sum is σ = 361025280. Its totient is φ = 146733120.

The previous prime is 230778473. The next prime is 230778479. The reversal of 230778477 is 774877032.

It is not a de Polignac number, because 230778477 - 2² = 230778473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230778473) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 182674 + ... + 183932.

It is an arithmetic number, because the mean of its divisors is an integer number (9025632).

Almost surely, 2^230778477 is an apocalyptic number.

230778477 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

230778477 is a deficient number, since it is larger than the sum of its proper divisors (130246803).

230778477 is a wasteful number, since it uses less digits than its factorization.

230778477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375 (or 1366 counting only the distinct ones).

The product of its (nonzero) digits is 460992, while the sum is 45.

The square root of 230778477 is about 15191.3948339183. The cubic root of 230778477 is about 613.3830457172.

The spelling of 230778477 in words is "two hundred thirty million, seven hundred seventy-eight thousand, four hundred seventy-seven".