386036640 has 144 divisors (see below), whose sum is σ = 1437168096. Its totient is φ = 93580800.

The previous prime is 386036639. The next prime is 386036653. The reversal of 386036640 is 46630683.

386036640 is a `hidden beast` number, since 3 + 8 + 6 + 0 + 3 + 6 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 386036595 and 386036604.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3655 + ... + 28025.

It is an arithmetic number, because the mean of its divisors is an integer number (9980334).

Almost surely, 2^386036640 is an apocalyptic number.

386036640 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 386036640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (718584048).

386036640 is an abundant number, since it is smaller than the sum of its proper divisors (1051131456).

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

386036640 is a wasteful number, since it uses less digits than its factorization.

386036640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24403 (or 24392 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 386036640 is about 19647.8151457102. The cubic root of 386036640 is about 728.1309791302.

The spelling of 386036640 in words is "three hundred eighty-six million, thirty-six thousand, six hundred forty".