3778628 has 12 divisors (see below), whose sum is σ = 7557312. Its totient is φ = 1619400.

The previous prime is 3778627. The next prime is 3778637. The reversal of 3778628 is 8268773.

3778628 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (3778627) 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, 67448 + ... + 67503.

It is an arithmetic number, because the mean of its divisors is an integer number (629776).

Almost surely, 2^3778628 is an apocalyptic number.

It is an amenable number.

3778628 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3778628 is a wasteful number, since it uses less digits than its factorization.

3778628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134962 (or 134960 counting only the distinct ones).

The product of its digits is 112896, while the sum is 41.

The square root of 3778628 is about 1943.8693371726. The cubic root of 3778628 is about 155.7559739444.

The spelling of 3778628 in words is "three million, seven hundred seventy-eight thousand, six hundred twenty-eight".