3782780 has 12 divisors (see below), whose sum is σ = 7943880. Its totient is φ = 1513104.

The previous prime is 3782773. The next prime is 3782803. The reversal of 3782780 is 872873.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3782780.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94550 + ... + 94589.

It is an arithmetic number, because the mean of its divisors is an integer number (661990).

Almost surely, 2^3782780 is an apocalyptic number.

It is an amenable number.

3782780 is an abundant number, since it is smaller than the sum of its proper divisors (4161100).

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

3782780 is a wasteful number, since it uses less digits than its factorization.

3782780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189148 (or 189146 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 3782780 is about 1944.9370169751. The cubic root of 3782780 is about 155.8130018817.

The spelling of 3782780 in words is "three million, seven hundred eighty-two thousand, seven hundred eighty".