3698728 has 24 divisors (see below), whose sum is σ = 7624890. Its totient is φ = 1680800.

The previous prime is 3698719. The next prime is 3698753. The reversal of 3698728 is 8278963.

It can be written as a sum of positive squares in only one way, i.e., 2439844 + 1258884 = 1562^2 + 1122^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 943 + ... + 2878.

Almost surely, 2^3698728 is an apocalyptic number.

It is an amenable number.

3698728 is an abundant number, since it is smaller than the sum of its proper divisors (3926162).

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

3698728 is a wasteful number, since it uses less digits than its factorization.

3698728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3849 (or 3834 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 3698728 is about 1923.2077370893. The cubic root of 3698728 is about 154.6503112247.

The spelling of 3698728 in words is "three million, six hundred ninety-eight thousand, seven hundred twenty-eight".