3728778 has 16 divisors (see below), whose sum is σ = 7563456. Its totient is φ = 1225280.

The previous prime is 3728759. The next prime is 3728779. The reversal of 3728778 is 8778273.

3728778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3728779) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3951 + ... + 4802.

It is an arithmetic number, because the mean of its divisors is an integer number (472716).

Almost surely, 2^3728778 is an apocalyptic number.

3728778 is an abundant number, since it is smaller than the sum of its proper divisors (3834678).

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

3728778 is a wasteful number, since it uses less digits than its factorization.

3728778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8829.

The product of its digits is 131712, while the sum is 42.

The square root of 3728778 is about 1931.0044018593. The cubic root of 3728778 is about 155.0679965279.

The spelling of 3728778 in words is "three million, seven hundred twenty-eight thousand, seven hundred seventy-eight".