36438723 has 6 divisors (see below), whose sum is σ = 52633724. Its totient is φ = 24292476.

The previous prime is 36438707. The next prime is 36438737. The reversal of 36438723 is 32783463.

36438723 is a `hidden beast` number, since 3 + 643 + 8 + 7 + 2 + 3 = 666.

It is not a de Polignac number, because 36438723 - 2⁴ = 36438707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36438763) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2024365 + ... + 2024382.

Almost surely, 2^36438723 is an apocalyptic number.

36438723 is a deficient number, since it is larger than the sum of its proper divisors (16195001).

36438723 is a wasteful number, since it uses less digits than its factorization.

36438723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048753 (or 4048750 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 36438723 is about 6036.4495359441. The cubic root of 36438723 is about 331.5286380806.

The spelling of 36438723 in words is "thirty-six million, four hundred thirty-eight thousand, seven hundred twenty-three".