36047881 has 4 divisors (see below), whose sum is σ = 36061200. Its totient is φ = 36034564.

The previous prime is 36047863. The next prime is 36047903. The reversal of 36047881 is 18874063.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 36047881 - 2⁵ = 36047849 is a prime.

It is a super-2 number, since 2×36047881² = 2598899449180322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36047881.

It is not an unprimeable number, because it can be changed into a prime (36047821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 991 + ... + 8548.

It is an arithmetic number, because the mean of its divisors is an integer number (9015300).

Almost surely, 2^36047881 is an apocalyptic number.

It is an amenable number.

36047881 is a deficient number, since it is larger than the sum of its proper divisors (13319).

36047881 is an equidigital number, since it uses as much as digits as its factorization.

36047881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13318.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 36047881 is about 6003.9887574845. The cubic root of 36047881 is about 330.3390485358.

The spelling of 36047881 in words is "thirty-six million, forty-seven thousand, eight hundred eighty-one".