386420540 has 96 divisors (see below), whose sum is σ = 943233984. Its totient is φ = 131420160.

The previous prime is 386420533. The next prime is 386420561. The reversal of 386420540 is 45024683.

It is a junction number, because it is equal to n+sod(n) for n = 386420497 and 386420506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1035794 + ... + 1036166.

It is an arithmetic number, because the mean of its divisors is an integer number (9825354).

Almost surely, 2^386420540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 386420540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (471616992).

386420540 is an abundant number, since it is smaller than the sum of its proper divisors (556813444).

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

386420540 is a wasteful number, since it uses less digits than its factorization.

386420540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687 (or 685 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 386420540 is about 19657.5822521489. The cubic root of 386420540 is about 728.3722661345.

The spelling of 386420540 in words is "three hundred eighty-six million, four hundred twenty thousand, five hundred forty".