3980728 has 16 divisors (see below), whose sum is σ = 7857000. Its totient is φ = 1885536.

The previous prime is 3980693. The next prime is 3980729. The reversal of 3980728 is 8270893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3980729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12943 + ... + 13246.

Almost surely, 2^3980728 is an apocalyptic number.

3980728 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

3980728 is a deficient number, since it is larger than the sum of its proper divisors (3876272).

3980728 is a wasteful number, since it uses less digits than its factorization.

3980728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26214 (or 26210 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 3980728 is about 1995.1761826967. The cubic root of 3980728 is about 158.4847580602.

The spelling of 3980728 in words is "three million, nine hundred eighty thousand, seven hundred twenty-eight".