386601840 has 60 divisors (see below), whose sum is σ = 1298340264. Its totient is φ = 103093632.

The previous prime is 386601823. The next prime is 386601851. The reversal of 386601840 is 48106683.

It is a happy number.

386601840 is a `hidden beast` number, since 3 + 8 + 6 + 601 + 8 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

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 = 386601795 and 386601804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 267754 + ... + 269193.

Almost surely, 2^386601840 is an apocalyptic number.

386601840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

386601840 is an abundant number, since it is smaller than the sum of its proper divisors (911738424).

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

386601840 is a wasteful number, since it uses less digits than its factorization.

386601840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536966 (or 536957 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 386601840 is about 19662.1931635309. The cubic root of 386601840 is about 728.4861603951.

The spelling of 386601840 in words is "three hundred eighty-six million, six hundred one thousand, eight hundred forty".