345178432 has 28 divisors (see below), whose sum is σ = 685553620. Its totient is φ = 172440576.

The previous prime is 345178429. The next prime is 345178511. The reversal of 345178432 is 234871543.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 63744256 + 281434176 = 7984^2 + 16776^2 .

It is a junction number, because it is equal to n+sod(n) for n = 345178391 and 345178400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144028 + ... + 146404.

Almost surely, 2^345178432 is an apocalyptic number.

345178432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

345178432 is a deficient number, since it is larger than the sum of its proper divisors (340375188).

345178432 is a wasteful number, since it uses less digits than its factorization.

345178432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4658 (or 4648 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 345178432 is about 18578.9782280942. The cubic root of 345178432 is about 701.4788002589.

The spelling of 345178432 in words is "three hundred forty-five million, one hundred seventy-eight thousand, four hundred thirty-two".