345053640 has 32 divisors (see below), whose sum is σ = 1035161280. Its totient is φ = 92014272.

The previous prime is 345053609. The next prime is 345053647. The reversal of 345053640 is 46350543.

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

It is a junction number, because it is equal to n+sod(n) for n = 345053598 and 345053607.

It is not an unprimeable number, because it can be changed into a prime (345053647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1437604 + ... + 1437843.

It is an arithmetic number, because the mean of its divisors is an integer number (32348790).

Almost surely, 2^345053640 is an apocalyptic number.

345053640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

345053640 is an abundant number, since it is smaller than the sum of its proper divisors (690107640).

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

345053640 is a wasteful number, since it uses less digits than its factorization.

345053640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2875461 (or 2875457 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 345053640 is about 18575.6195051471. The cubic root of 345053640 is about 701.3942551023.

The spelling of 345053640 in words is "three hundred forty-five million, fifty-three thousand, six hundred forty".