308115630 has 64 divisors (see below), whose sum is σ = 824083200. Its totient is φ = 81920160.

The previous prime is 308115629. The next prime is 308115649. The reversal of 308115630 is 36511803.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 308115594 and 308115603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100825 + ... + 103835.

It is an arithmetic number, because the mean of its divisors is an integer number (12876300).

Almost surely, 2^308115630 is an apocalyptic number.

308115630 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 308115630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (412041600).

308115630 is an abundant number, since it is smaller than the sum of its proper divisors (515967570).

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

308115630 is a wasteful number, since it uses less digits than its factorization.

308115630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3406 (or 3400 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 308115630 is about 17553.2227810166. Note that the first 3 decimals coincide. The cubic root of 308115630 is about 675.4158425276.

The spelling of 308115630 in words is "three hundred eight million, one hundred fifteen thousand, six hundred thirty".