345636440 has 16 divisors (see below), whose sum is σ = 777682080. Its totient is φ = 138254560.

The previous prime is 345636439. The next prime is 345636521. The reversal of 345636440 is 44636543.

It is a self number, because there is not a number n which added to its sum of digits gives 345636440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4320416 + ... + 4320495.

It is an arithmetic number, because the mean of its divisors is an integer number (48605130).

Almost surely, 2^345636440 is an apocalyptic number.

It is an amenable number.

345636440 is an abundant number, since it is smaller than the sum of its proper divisors (432045640).

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

345636440 is a wasteful number, since it uses less digits than its factorization.

345636440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8640922 (or 8640918 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 35.

The square root of 345636440 is about 18591.3001159144. The cubic root of 345636440 is about 701.7889209354.

The spelling of 345636440 in words is "three hundred forty-five million, six hundred thirty-six thousand, four hundred forty".