386948730 has 128 divisors (see below), whose sum is σ = 1130692608. Its totient is φ = 82732032.

The previous prime is 386948729. The next prime is 386948743. The reversal of 386948730 is 37849683.

It is a super-2 number, since 2×386948730² = 299458639297225800, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 386948730.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1010119 + ... + 1010501.

It is an arithmetic number, because the mean of its divisors is an integer number (8833536).

Almost surely, 2^386948730 is an apocalyptic number.

386948730 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 386948730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (565346304).

386948730 is an abundant number, since it is smaller than the sum of its proper divisors (743743878).

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

386948730 is a wasteful number, since it uses less digits than its factorization.

386948730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700.

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 386948730 is about 19671.0124294608. The cubic root of 386948730 is about 728.7039805513.

The spelling of 386948730 in words is "three hundred eighty-six million, nine hundred forty-eight thousand, seven hundred thirty".