345215532 has 24 divisors (see below), whose sum is σ = 852885936. Its totient is φ = 108302848.

The previous prime is 345215489. The next prime is 345215537. The reversal of 345215532 is 235512543.

It is a self number, because there is not a number n which added to its sum of digits gives 345215532.

It is not an unprimeable number, because it can be changed into a prime (345215537) 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, 845913 + ... + 846320.

It is an arithmetic number, because the mean of its divisors is an integer number (35536914).

Almost surely, 2^345215532 is an apocalyptic number.

It is an amenable number.

345215532 is an abundant number, since it is smaller than the sum of its proper divisors (507670404).

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

345215532 is a wasteful number, since it uses less digits than its factorization.

345215532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692257 (or 1692255 counting only the distinct ones).

The product of its digits is 18000, while the sum is 30.

The square root of 345215532 is about 18579.9766415354. The cubic root of 345215532 is about 701.5039311562.

The spelling of 345215532 in words is "three hundred forty-five million, two hundred fifteen thousand, five hundred thirty-two".