345220032 has 28 divisors (see below), whose sum is σ = 913395176. Its totient is φ = 115073280.

The previous prime is 345219989. The next prime is 345220049. The reversal of 345220032 is 230022543.

It is a junction number, because it is equal to n+sod(n) for n = 345219990 and 345220008.

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, 898819 + ... + 899202.

Almost surely, 2^345220032 is an apocalyptic number.

345220032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

345220032 is an abundant number, since it is smaller than the sum of its proper divisors (568175144).

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

345220032 is a wasteful number, since it uses less digits than its factorization.

345220032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798036 (or 1798026 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 345220032 is about 18580.0977392478. The cubic root of 345220032 is about 701.5069792558.

Adding to 345220032 its reverse (230022543), we get a palindrome (575242575).

The spelling of 345220032 in words is "three hundred forty-five million, two hundred twenty thousand, thirty-two".