36407881 has 4 divisors (see below), whose sum is σ = 36564372. Its totient is φ = 36251392.

The previous prime is 36407831. The next prime is 36407893. The reversal of 36407881 is 18870463.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18870463 = 2647 ⋅7129.

It can be written as a sum of positive squares in 2 ways, for example, as 4372281 + 32035600 = 2091^2 + 5660^2 .

It is a cyclic number.

It is not a de Polignac number, because 36407881 - 2⁷ = 36407753 is a prime.

It is a super-2 number, since 2×36407881² = 2651067597820322, 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 36407881.

It is not an unprimeable number, because it can be changed into a prime (36407831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77896 + ... + 78361.

It is an arithmetic number, because the mean of its divisors is an integer number (9141093).

Almost surely, 2^36407881 is an apocalyptic number.

It is an amenable number.

36407881 is a deficient number, since it is larger than the sum of its proper divisors (156491).

36407881 is a wasteful number, since it uses less digits than its factorization.

36407881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156490.

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

The square root of 36407881 is about 6033.8943477658. The cubic root of 36407881 is about 331.4350755953.

The spelling of 36407881 in words is "thirty-six million, four hundred seven thousand, eight hundred eighty-one".