3722778 has 12 divisors (see below), whose sum is σ = 8066058. Its totient is φ = 1240920.

The previous prime is 3722767. The next prime is 3722791. The reversal of 3722778 is 8772273.

3722778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3250809 + 471969 = 1803^2 + 687^2 .

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 5 ways as a sum of consecutive naturals, for example, 103393 + ... + 103428.

Almost surely, 2^3722778 is an apocalyptic number.

3722778 is an abundant number, since it is smaller than the sum of its proper divisors (4343280).

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

3722778 is a wasteful number, since it uses less digits than its factorization.

3722778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206829 (or 206826 counting only the distinct ones).

The product of its digits is 32928, while the sum is 36.

The square root of 3722778 is about 1929.4501807510. The cubic root of 3722778 is about 154.9847782485.

The spelling of 3722778 in words is "three million, seven hundred twenty-two thousand, seven hundred seventy-eight".