36140538 has 64 divisors (see below), whose sum is σ = 89337600. Its totient is φ = 9709056.

The previous prime is 36140519. The next prime is 36140539. The reversal of 36140538 is 83504163.

It is a super-2 number, since 2×36140538² = 2612276973858888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36140539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34470 + ... + 35502.

It is an arithmetic number, because the mean of its divisors is an integer number (1395900).

Almost surely, 2^36140538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36140538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44668800).

36140538 is an abundant number, since it is smaller than the sum of its proper divisors (53197062).

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

36140538 is a wasteful number, since it uses less digits than its factorization.

36140538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076 (or 1062 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 36140538 is about 6011.7000923200. The cubic root of 36140538 is about 330.6218394310.

The spelling of 36140538 in words is "thirty-six million, one hundred forty thousand, five hundred thirty-eight".