345849440 has 48 divisors (see below), whose sum is σ = 818829648. Its totient is φ = 138041856.

The previous prime is 345849437. The next prime is 345849481. The reversal of 345849440 is 44948543.

It is a super-2 number, since 2×345849440² = 239223670296627200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81614 + ... + 85746.

It is an arithmetic number, because the mean of its divisors is an integer number (17058951).

Almost surely, 2^345849440 is an apocalyptic number.

It is an amenable number.

345849440 is an abundant number, since it is smaller than the sum of its proper divisors (472980208).

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

345849440 is a wasteful number, since it uses less digits than its factorization.

345849440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671 (or 4663 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 41.

The square root of 345849440 is about 18597.0277195040. The cubic root of 345849440 is about 701.9330515181.

The spelling of 345849440 in words is "three hundred forty-five million, eight hundred forty-nine thousand, four hundred forty".