386908830 has 192 divisors, whose sum is σ = 1295364096. Its totient is φ = 77760000.

The previous prime is 386908813. The next prime is 386908877. The reversal of 386908830 is 38809683.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 213930 + ... + 215730.

It is an arithmetic number, because the mean of its divisors is an integer number (6746688).

Almost surely, 2^386908830 is an apocalyptic number.

386908830 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 386908830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (647682048).

386908830 is an abundant number, since it is smaller than the sum of its proper divisors (908455266).

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

386908830 is a wasteful number, since it uses less digits than its factorization.

386908830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1863 (or 1860 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 386908830 is about 19669.9982206405. The cubic root of 386908830 is about 728.6789330571.

The spelling of 386908830 in words is "three hundred eighty-six million, nine hundred eight thousand, eight hundred thirty".