345425520 has 80 divisors (see below), whose sum is σ = 1168175232. Its totient is φ = 83738880.

The previous prime is 345425501. The next prime is 345425551. The reversal of 345425520 is 25524543.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62782 + ... + 68061.

Almost surely, 2^345425520 is an apocalyptic number.

345425520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

345425520 is an abundant number, since it is smaller than the sum of its proper divisors (822749712).

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

345425520 is a wasteful number, since it uses less digits than its factorization.

345425520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130870 (or 130864 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

The square root of 345425520 is about 18585.6267045263. The cubic root of 345425520 is about 701.6461394636.

The spelling of 345425520 in words is "three hundred forty-five million, four hundred twenty-five thousand, five hundred twenty".