386726340 has 384 divisors, whose sum is σ = 1495646208. Its totient is φ = 72069120.

The previous prime is 386726287. The next prime is 386726383. The reversal of 386726340 is 43627683.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2822752 + ... + 2822888.

It is an arithmetic number, because the mean of its divisors is an integer number (3894912).

Almost surely, 2^386726340 is an apocalyptic number.

386726340 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 386726340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (747823104).

386726340 is an abundant number, since it is smaller than the sum of its proper divisors (1108919868).

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

386726340 is a wasteful number, since it uses less digits than its factorization.

386726340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 386726340 is about 19665.3588830715. The cubic root of 386726340 is about 728.5643517740.

The spelling of 386726340 in words is "three hundred eighty-six million, seven hundred twenty-six thousand, three hundred forty".