3728784 has 40 divisors (see below), whose sum is σ = 9722592. Its totient is φ = 1231360.

The previous prime is 3728779. The next prime is 3728789. The reversal of 3728784 is 4878273.

It is an interprime number because it is at equal distance from previous prime (3728779) and next prime (3728789).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3728789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5992 + ... + 6584.

Almost surely, 2^3728784 is an apocalyptic number.

It is an amenable number.

3728784 is an abundant number, since it is smaller than the sum of its proper divisors (5993808).

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

3728784 is a wasteful number, since it uses less digits than its factorization.

3728784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735 (or 729 counting only the distinct ones).

The product of its digits is 75264, while the sum is 39.

The square root of 3728784 is about 1931.0059554543. The cubic root of 3728784 is about 155.0680797014.

The spelling of 3728784 in words is "three million, seven hundred twenty-eight thousand, seven hundred eighty-four".