308072448 has 156 divisors (see below), whose sum is σ = 911068548. Its totient is φ = 100270080.

The previous prime is 308072447. The next prime is 308072461. The reversal of 308072448 is 844270803.

It can be written as a sum of positive squares in 2 ways, for example, as 78004224 + 230068224 = 8832^2 + 15168^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308072447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2248636 + ... + 2248772.

It is an arithmetic number, because the mean of its divisors is an integer number (5840183).

Almost surely, 2^308072448 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 308072448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (455534274).

308072448 is an abundant number, since it is smaller than the sum of its proper divisors (602996100).

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

308072448 is a wasteful number, since it uses less digits than its factorization.

308072448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 308072448 is about 17551.9927073823. The cubic root of 308072448 is about 675.3842881730.

The spelling of 308072448 in words is "three hundred eight million, seventy-two thousand, four hundred forty-eight".