306908406 has 128 divisors (see below), whose sum is σ = 828825600. Its totient is φ = 82231200.

The previous prime is 306908369. The next prime is 306908431. The reversal of 306908406 is 604809603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1084341 + ... + 1084623.

It is an arithmetic number, because the mean of its divisors is an integer number (6475200).

Almost surely, 2^306908406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 306908406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (414412800).

306908406 is an abundant number, since it is smaller than the sum of its proper divisors (521917194).

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

306908406 is a wasteful number, since it uses less digits than its factorization.

306908406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 465 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 306908406 is about 17518.8015001027. The cubic root of 306908406 is about 674.5325751572.

The spelling of 306908406 in words is "three hundred six million, nine hundred eight thousand, four hundred six".