345947872 has 24 divisors (see below), whose sum is σ = 681609600. Its totient is φ = 172840704.

The previous prime is 345947869. The next prime is 345947887. The reversal of 345947872 is 278749543.

It is a happy number.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

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, 48129 + ... + 54847.

It is an arithmetic number, because the mean of its divisors is an integer number (28400400).

Almost surely, 2^345947872 is an apocalyptic number.

345947872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

345947872 is a deficient number, since it is larger than the sum of its proper divisors (335661728).

345947872 is a wasteful number, since it uses less digits than its factorization.

345947872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8338 (or 8330 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 49.

The square root of 345947872 is about 18599.6739756373. The cubic root of 345947872 is about 701.9996374486. Note that the first 3 decimals are identical.

The spelling of 345947872 in words is "three hundred forty-five million, nine hundred forty-seven thousand, eight hundred seventy-two".