3778840 has 64 divisors (see below), whose sum is σ = 9424800. Its totient is φ = 1362816.

The previous prime is 3778837. The next prime is 3778861. The reversal of 3778840 is 488773.

It is a self number, because there is not a number n which added to its sum of digits gives 3778840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87859 + ... + 87901.

Almost surely, 2^3778840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3778840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4712400).

3778840 is an abundant number, since it is smaller than the sum of its proper divisors (5645960).

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

3778840 is a wasteful number, since it uses less digits than its factorization.

3778840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 3778840 is about 1943.9238668219. The cubic root of 3778840 is about 155.7588867873.

The spelling of 3778840 in words is "three million, seven hundred seventy-eight thousand, eight hundred forty".