340978608 has 120 divisors (see below), whose sum is σ = 987936768. Its totient is φ = 109719936.

The previous prime is 340978601. The next prime is 340978619. The reversal of 340978608 is 806879043.

It is a happy number.

340978608 is a `hidden beast` number, since 34 + 0 + 9 + 7 + 8 + 608 = 666.

It is a super-2 number, since 2×340978608² = 232532822227235328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (340978601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 561441 + ... + 562047.

Almost surely, 2^340978608 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 340978608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (493968384).

340978608 is an abundant number, since it is smaller than the sum of its proper divisors (646958160).

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

340978608 is a wasteful number, since it uses less digits than its factorization.

340978608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751 (or 742 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 340978608 is about 18465.6060826608. The cubic root of 340978608 is about 698.6221932500.

The spelling of 340978608 in words is "three hundred forty million, nine hundred seventy-eight thousand, six hundred eight".