345420234 has 32 divisors (see below), whose sum is σ = 788351040. Its totient is φ = 112027536.

The previous prime is 345420223. The next prime is 345420269. The reversal of 345420234 is 432024543.

345420234 is a `hidden beast` number, since 3 + 4 + 5 + 420 + 234 = 666.

It is a super-2 number, since 2×345420234² = 238630276113229512, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 345420198 and 345420207.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84444 + ... + 88439.

It is an arithmetic number, because the mean of its divisors is an integer number (24635970).

Almost surely, 2^345420234 is an apocalyptic number.

345420234 is an abundant number, since it is smaller than the sum of its proper divisors (442930806).

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

345420234 is a wasteful number, since it uses less digits than its factorization.

345420234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172931 (or 172925 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 345420234 is about 18585.4844973167. The cubic root of 345420234 is about 701.6425603801.

Adding to 345420234 its reverse (432024543), we get a palindrome (777444777).

The spelling of 345420234 in words is "three hundred forty-five million, four hundred twenty thousand, two hundred thirty-four".