386755820 has 48 divisors (see below), whose sum is σ = 909988128. Its totient is φ = 136834560.

The previous prime is 386755793. The next prime is 386755843. The reversal of 386755820 is 28557683.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15617 + ... + 31896.

It is an arithmetic number, because the mean of its divisors is an integer number (18958086).

Almost surely, 2^386755820 is an apocalyptic number.

It is an amenable number.

386755820 is an abundant number, since it is smaller than the sum of its proper divisors (523232308).

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

386755820 is a wasteful number, since it uses less digits than its factorization.

386755820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47570 (or 47568 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 44.

The square root of 386755820 is about 19666.1084101558. The cubic root of 386755820 is about 728.5828640302.

The spelling of 386755820 in words is "three hundred eighty-six million, seven hundred fifty-five thousand, eight hundred twenty".