308440986 has 48 divisors (see below), whose sum is σ = 721729440. Its totient is φ = 87618720.

The previous prime is 308440939. The next prime is 308440997. The reversal of 308440986 is 689044803.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49696 + ... + 55556.

It is an arithmetic number, because the mean of its divisors is an integer number (15036030).

Almost surely, 2^308440986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 308440986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360864720).

308440986 is an abundant number, since it is smaller than the sum of its proper divisors (413288454).

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

308440986 is a wasteful number, since it uses less digits than its factorization.

308440986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6059 (or 6052 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 308440986 is about 17562.4880355831. The cubic root of 308440986 is about 675.6534949671.

The spelling of 308440986 in words is "three hundred eight million, four hundred forty thousand, nine hundred eighty-six".