36493812 has 18 divisors (see below), whose sum is σ = 92248338. Its totient is φ = 12164592.

The previous prime is 36493771. The next prime is 36493817. The reversal of 36493812 is 21839463.

36493812 is a `hidden beast` number, since 3 + 649 + 3 + 8 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 36433296 + 60516 = 6036^2 + 246^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1013717 = 36493812 / (3 + 6 + 4 + 9 + 3 + 8 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36493817) 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, 506823 + ... + 506894.

Almost surely, 2^36493812 is an apocalyptic number.

It is an amenable number.

36493812 is an abundant number, since it is smaller than the sum of its proper divisors (55754526).

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

36493812 is a wasteful number, since it uses less digits than its factorization.

36493812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013727 (or 1013722 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 36493812 is about 6041.0108425660. The cubic root of 36493812 is about 331.6956251352.

The spelling of 36493812 in words is "thirty-six million, four hundred ninety-three thousand, eight hundred twelve".