308297040 has 320 divisors, whose sum is σ = 1102429440. Its totient is φ = 70778880.

The previous prime is 308297029. The next prime is 308297047. The reversal of 308297040 is 40792803.

It is a junction number, because it is equal to n+sod(n) for n = 308296992 and 308297010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308297047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3178272 + ... + 3178368.

It is an arithmetic number, because the mean of its divisors is an integer number (3445092).

Almost surely, 2^308297040 is an apocalyptic number.

308297040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 308297040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (551214720).

308297040 is an abundant number, since it is smaller than the sum of its proper divisors (794132400).

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

308297040 is a wasteful number, since it uses less digits than its factorization.

308297040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 308297040 is about 17558.3894477825. The cubic root of 308297040 is about 675.5483719387.

The spelling of 308297040 in words is "three hundred eight million, two hundred ninety-seven thousand, forty".