36728397 has 20 divisors (see below), whose sum is σ = 56639616. Its totient is φ = 23694120.

The previous prime is 36728389. The next prime is 36728399. The reversal of 36728397 is 79382763.

It is a happy number.

36728397 is a `hidden beast` number, since 367 + 283 + 9 + 7 = 666.

It is not a de Polignac number, because 36728397 - 2³ = 36728389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36728399) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4803 + ... + 9824.

Almost surely, 2^36728397 is an apocalyptic number.

It is an amenable number.

36728397 is a deficient number, since it is larger than the sum of its proper divisors (19911219).

36728397 is a wasteful number, since it uses less digits than its factorization.

36728397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14670 (or 14661 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 36728397 is about 6060.3957791550. The cubic root of 36728397 is about 332.4048292642.

The spelling of 36728397 in words is "thirty-six million, seven hundred twenty-eight thousand, three hundred ninety-seven".