3780428 has 12 divisors (see below), whose sum is σ = 6661200. Its totient is φ = 1877232.

The previous prime is 3780407. The next prime is 3780433. The reversal of 3780428 is 8240873.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3780394 and 3780403.

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, 2576 + ... + 3767.

It is an arithmetic number, because the mean of its divisors is an integer number (555100).

Almost surely, 2^3780428 is an apocalyptic number.

It is an amenable number.

3780428 is a deficient number, since it is larger than the sum of its proper divisors (2880772).

3780428 is a wasteful number, since it uses less digits than its factorization.

3780428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6496 (or 6494 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 3780428 is about 1944.3322761298. The cubic root of 3780428 is about 155.7807021656.

The spelling of 3780428 in words is "three million, seven hundred eighty thousand, four hundred twenty-eight".