345420224 has 28 divisors (see below), whose sum is σ = 686982624. Its totient is φ = 172322304.

The previous prime is 345420223. The next prime is 345420269. The reversal of 345420224 is 422024543.

It is a happy number.

It is a super-2 number, since 2×345420224² = 238630262296420352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 345420193 and 345420202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345420223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23804 + ... + 35460.

Almost surely, 2^345420224 is an apocalyptic number.

It is an amenable number.

345420224 is a deficient number, since it is larger than the sum of its proper divisors (341562400).

345420224 is a wasteful number, since it uses less digits than its factorization.

345420224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12132 (or 12122 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 345420224 is about 18585.4842282896. The cubic root of 345420224 is about 701.6425536092.

Adding to 345420224 its reverse (422024543), we get a palindrome (767444767).

The spelling of 345420224 in words is "three hundred forty-five million, four hundred twenty thousand, two hundred twenty-four".