36013640 has 32 divisors (see below), whose sum is σ = 87265080. Its totient is φ = 13297152.

The previous prime is 36013631. The next prime is 36013643. The reversal of 36013640 is 4631063.

It can be written as a sum of positive squares in 4 ways, for example, as 27730756 + 8282884 = 5266^2 + 2878^2 .

It is not an unprimeable number, because it can be changed into a prime (36013643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34109 + ... + 35148.

Almost surely, 2^36013640 is an apocalyptic number.

It is an amenable number.

36013640 is an abundant number, since it is smaller than the sum of its proper divisors (51251440).

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

36013640 is a wasteful number, since it uses less digits than its factorization.

36013640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69281 (or 69277 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 36013640 is about 6001.1365590195. The cubic root of 36013640 is about 330.2344217420.

The spelling of 36013640 in words is "thirty-six million, thirteen thousand, six hundred forty".