345526640 has 40 divisors (see below), whose sum is σ = 807591168. Its totient is φ = 137480960.

The previous prime is 345526633. The next prime is 345526661. The reversal of 345526640 is 46625543.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 345526640.

It is a congruent number.

It is an unprimeable number.

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, 3974 + ... + 26586.

Almost surely, 2^345526640 is an apocalyptic number.

It is an amenable number.

345526640 is an abundant number, since it is smaller than the sum of its proper divisors (462064528).

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

345526640 is a wasteful number, since it uses less digits than its factorization.

345526640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22817 (or 22811 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 345526640 is about 18588.3468872302. The cubic root of 345526640 is about 701.7145995043.

The spelling of 345526640 in words is "three hundred forty-five million, five hundred twenty-six thousand, six hundred forty".