3728775 has 24 divisors (see below), whose sum is σ = 6249600. Its totient is φ = 1961440.

The previous prime is 3728759. The next prime is 3728779. The reversal of 3728775 is 5778273.

It is not a de Polignac number, because 3728775 - 2⁴ = 3728759 is a prime.

It is a d-powerful number, because it can be written as 3¹³ + 7² + 2²¹ + 8³ + 7⁵ + 7⁵ + 5⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3728779) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5926 + ... + 6524.

It is an arithmetic number, because the mean of its divisors is an integer number (260400).

Almost surely, 2^3728775 is an apocalyptic number.

3728775 is a deficient number, since it is larger than the sum of its proper divisors (2520825).

3728775 is a wasteful number, since it uses less digits than its factorization.

3728775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695 (or 690 counting only the distinct ones).

The product of its digits is 82320, while the sum is 39.

The square root of 3728775 is about 1931.0036250613. The cubic root of 3728775 is about 155.0679549410.

The spelling of 3728775 in words is "three million, seven hundred twenty-eight thousand, seven hundred seventy-five".