3728978 has 24 divisors (see below), whose sum is σ = 6479760. Its totient is φ = 1603800.

The previous prime is 3728969. The next prime is 3728983. The reversal of 3728978 is 8798273.

It is a happy number.

3728978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4193 + ... + 5003.

It is an arithmetic number, because the mean of its divisors is an integer number (269990).

Almost surely, 2^3728978 is an apocalyptic number.

3728978 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3728978 is a deficient number, since it is larger than the sum of its proper divisors (2750782).

3728978 is a wasteful number, since it uses less digits than its factorization.

3728978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854 (or 843 counting only the distinct ones).

The product of its digits is 169344, while the sum is 44.

The square root of 3728978 is about 1931.0561876859. The cubic root of 3728978 is about 155.0707689325.

The spelling of 3728978 in words is "three million, seven hundred twenty-eight thousand, nine hundred seventy-eight".