3890778 has 16 divisors (see below), whose sum is σ = 7806240. Its totient is φ = 1292816.

The previous prime is 3890771. The next prime is 3890819. The reversal of 3890778 is 8770983.

It is not an unprimeable number, because it can be changed into a prime (3890771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1501 + ... + 3167.

It is an arithmetic number, because the mean of its divisors is an integer number (487890).

Almost surely, 2^3890778 is an apocalyptic number.

3890778 is an abundant number, since it is smaller than the sum of its proper divisors (3915462).

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

3890778 is a wasteful number, since it uses less digits than its factorization.

3890778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2061.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 3890778 is about 1972.5055133003. The cubic root of 3890778 is about 157.2819254546.

The spelling of 3890778 in words is "three million, eight hundred ninety thousand, seven hundred seventy-eight".