3856980 has 24 divisors (see below), whose sum is σ = 10799712. Its totient is φ = 1028512.

The previous prime is 3856973. The next prime is 3856987. The reversal of 3856980 is 896583.

It is an interprime number because it is at equal distance from previous prime (3856973) and next prime (3856987).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32082 + ... + 32201.

It is an arithmetic number, because the mean of its divisors is an integer number (449988).

Almost surely, 2^3856980 is an apocalyptic number.

3856980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3856980 is an abundant number, since it is smaller than the sum of its proper divisors (6942732).

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

3856980 is a wasteful number, since it uses less digits than its factorization.

3856980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64295 (or 64293 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 3856980 is about 1963.9195502871. The cubic root of 3856980 is about 156.8251803411.

The spelling of 3856980 in words is "three million, eight hundred fifty-six thousand, nine hundred eighty".