308293938 has 40 divisors (see below), whose sum is σ = 695827440. Its totient is φ = 102017880.

The previous prime is 308293933. The next prime is 308293949. The reversal of 308293938 is 839392803.

It is a junction number, because it is equal to n+sod(n) for n = 308293893 and 308293902.

It is not an unprimeable number, because it can be changed into a prime (308293933) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15673 + ... + 29363.

It is an arithmetic number, because the mean of its divisors is an integer number (17395686).

Almost surely, 2^308293938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 308293938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347913720).

308293938 is an abundant number, since it is smaller than the sum of its proper divisors (387533502).

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

308293938 is a wasteful number, since it uses less digits than its factorization.

308293938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13844 (or 13835 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 308293938 is about 17558.3011137183. The cubic root of 308293938 is about 675.5461062038.

It can be divided in two parts, 3082 and 93938, that added together give a triangular number (97020 = T₄₄₀).

The spelling of 308293938 in words is "three hundred eight million, two hundred ninety-three thousand, nine hundred thirty-eight".