386144240 has 40 divisors (see below), whose sum is σ = 936823968. Its totient is φ = 147741440.

The previous prime is 386144233. The next prime is 386144267. The reversal of 386144240 is 42441683.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 386144197 and 386144206.

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 7 ways as a sum of consecutive naturals, for example, 103091 + ... + 106770.

Almost surely, 2^386144240 is an apocalyptic number.

It is an amenable number.

386144240 is an abundant number, since it is smaller than the sum of its proper divisors (550679728).

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

386144240 is a wasteful number, since it uses less digits than its factorization.

386144240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209897 (or 209891 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 386144240 is about 19650.5531728753. The cubic root of 386144240 is about 728.1986234997.

The spelling of 386144240 in words is "three hundred eighty-six million, one hundred forty-four thousand, two hundred forty".