345252240 has 80 divisors (see below), whose sum is σ = 1189209600. Its totient is φ = 92066688.

The previous prime is 345252233. The next prime is 345252277. The reversal of 345252240 is 42252543.

It is a happy number.

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 (27).

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, 77760 + ... + 82079.

It is an arithmetic number, because the mean of its divisors is an integer number (14865120).

Almost surely, 2^345252240 is an apocalyptic number.

345252240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

345252240 is an abundant number, since it is smaller than the sum of its proper divisors (843957360).

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

345252240 is a wasteful number, since it uses less digits than its factorization.

345252240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159861 (or 159849 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 345252240 is about 18580.9644529018. The cubic root of 345252240 is about 701.5287947475.

The spelling of 345252240 in words is "three hundred forty-five million, two hundred fifty-two thousand, two hundred forty".