340253440 has 72 divisors (see below), whose sum is σ = 819137088. Its totient is φ = 135413760.

The previous prime is 340253429. The next prime is 340253449. The reversal of 340253440 is 44352043.

It is not an unprimeable number, because it can be changed into a prime (340253449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307929 + ... + 309031.

It is an arithmetic number, because the mean of its divisors is an integer number (11376904).

Almost surely, 2^340253440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340253440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409568544).

340253440 is an abundant number, since it is smaller than the sum of its proper divisors (478883648).

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

340253440 is a wasteful number, since it uses less digits than its factorization.

340253440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365 (or 1351 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 340253440 is about 18445.9599912826. The cubic root of 340253440 is about 698.1265824621.

The spelling of 340253440 in words is "three hundred forty million, two hundred fifty-three thousand, four hundred forty".