3894728 has 32 divisors (see below), whose sum is σ = 7767360. Its totient is φ = 1826880.

The previous prime is 3894707. The next prime is 3894733. The reversal of 3894728 is 8274983.

Added to its reverse (8274983) it gives a triangular number (12169711 = T₄₉₃₃).

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 7 ways as a sum of consecutive naturals, for example, 11051 + ... + 11397.

It is an arithmetic number, because the mean of its divisors is an integer number (242730).

Almost surely, 2^3894728 is an apocalyptic number.

It is an amenable number.

3894728 is a deficient number, since it is larger than the sum of its proper divisors (3872632).

3894728 is a wasteful number, since it uses less digits than its factorization.

3894728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 433 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 3894728 is about 1973.5065239315. The cubic root of 3894728 is about 157.3351327637.

Adding to 3894728 its reverse (8274983), we get a triangular number (12169711 = T₄₉₃₃).

The spelling of 3894728 in words is "three million, eight hundred ninety-four thousand, seven hundred twenty-eight".