36131240 has 32 divisors (see below), whose sum is σ = 83495880. Its totient is φ = 14061312.

The previous prime is 36131237. The next prime is 36131257. The reversal of 36131240 is 4213163.

It can be written as a sum of positive squares in 4 ways, for example, as 30758116 + 5373124 = 5546^2 + 2318^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10727 + ... + 13686.

Almost surely, 2^36131240 is an apocalyptic number.

It is an amenable number.

36131240 is an abundant number, since it is smaller than the sum of its proper divisors (47364640).

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

36131240 is a wasteful number, since it uses less digits than its factorization.

36131240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24461 (or 24457 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 36131240 is about 6010.9267172375. The cubic root of 36131240 is about 330.5934835948.

The spelling of 36131240 in words is "thirty-six million, one hundred thirty-one thousand, two hundred forty".