36139240 has 48 divisors (see below), whose sum is σ = 83283300. Its totient is φ = 14113536.

The previous prime is 36139237. The next prime is 36139253. The reversal of 36139240 is 4293163.

It can be written as a sum of positive squares in 2 ways, for example, as 35070084 + 1069156 = 5922^2 + 1034^2 .

It is a junction number, because it is equal to n+sod(n) for n = 36139199 and 36139208.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88156 + ... + 88564.

Almost surely, 2^36139240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36139240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41641650).

36139240 is an abundant number, since it is smaller than the sum of its proper divisors (47144060).

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

36139240 is a wasteful number, since it uses less digits than its factorization.

36139240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 36139240 is about 6011.5921352001. The cubic root of 36139240 is about 330.6178812508.

It can be divided in two parts, 361 and 39240, that added together give a square (39601 = 199²).

The spelling of 36139240 in words is "thirty-six million, one hundred thirty-nine thousand, two hundred forty".