36128506 has 4 divisors (see below), whose sum is σ = 54192762. Its totient is φ = 18064252.

The previous prime is 36128501. The next prime is 36128507. The reversal of 36128506 is 60582163.

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

It can be written as a sum of positive squares in only one way, i.e., 33698025 + 2430481 = 5805^2 + 1559^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (36128501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9032125 + ... + 9032128.

Almost surely, 2^36128506 is an apocalyptic number.

36128506 is the 3802-nd centered pentagonal number.

36128506 is a deficient number, since it is larger than the sum of its proper divisors (18064256).

36128506 is a wasteful number, since it uses less digits than its factorization.

36128506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18064255.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 36128506 is about 6010.6992937594. The cubic root of 36128506 is about 330.5851448701.

The spelling of 36128506 in words is "thirty-six million, one hundred twenty-eight thousand, five hundred six".