3807428 has 12 divisors (see below), whose sum is σ = 6678672. Its totient is φ = 1899240.

The previous prime is 3807421. The next prime is 3807431. The reversal of 3807428 is 8247083.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3807394 and 3807403.

It is not an unprimeable number, because it can be changed into a prime (3807421) 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, 1451 + ... + 3117.

It is an arithmetic number, because the mean of its divisors is an integer number (556556).

Almost surely, 2^3807428 is an apocalyptic number.

It is an amenable number.

3807428 is a deficient number, since it is larger than the sum of its proper divisors (2871244).

3807428 is a wasteful number, since it uses less digits than its factorization.

3807428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2242 (or 2240 counting only the distinct ones).

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

The square root of 3807428 is about 1951.2631806089. The cubic root of 3807428 is about 156.1506871833.

The spelling of 3807428 in words is "three million, eight hundred seven thousand, four hundred twenty-eight".