3938580 has 36 divisors (see below), whose sum is σ = 11947572. Its totient is φ = 1050240.

The previous prime is 3938549. The next prime is 3938593. The reversal of 3938580 is 858393.

It can be written as a sum of positive squares in 2 ways, for example, as 501264 + 3437316 = 708^2 + 1854^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10761 + ... + 11120.

It is an arithmetic number, because the mean of its divisors is an integer number (331877).

Almost surely, 2^3938580 is an apocalyptic number.

3938580 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3938580 is an abundant number, since it is smaller than the sum of its proper divisors (8008992).

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

3938580 is a wasteful number, since it uses less digits than its factorization.

3938580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21896 (or 21891 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 3938580 is about 1984.5855990609. The cubic root of 3938580 is about 157.9234260150.

The spelling of 3938580 in words is "three million, nine hundred thirty-eight thousand, five hundred eighty".