3728787 has 4 divisors (see below), whose sum is σ = 4971720. Its totient is φ = 2485856.

The previous prime is 3728779. The next prime is 3728789. The reversal of 3728787 is 7878273.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3728787 - 2³ = 3728779 is a prime.

It is a D-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 3 ways as a sum of consecutive naturals, for example, 621462 + ... + 621467.

It is an arithmetic number, because the mean of its divisors is an integer number (1242930).

Almost surely, 2^3728787 is an apocalyptic number.

3728787 is a deficient number, since it is larger than the sum of its proper divisors (1242933).

3728787 is a wasteful number, since it uses less digits than its factorization.

3728787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242932.

The product of its digits is 131712, while the sum is 42.

The square root of 3728787 is about 1931.0067322513. The cubic root of 3728787 is about 155.0681212882.

The spelling of 3728787 in words is "three million, seven hundred twenty-eight thousand, seven hundred eighty-seven".