36815840 has 48 divisors (see below), whose sum is σ = 87816960. Its totient is φ = 14584320.

The previous prime is 36815839. The next prime is 36815923. The reversal of 36815840 is 4851863.

It is a self number, because there is not a number n which added to its sum of digits gives 36815840.

It is a congruent number.

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, 16385 + ... + 18495.

It is an arithmetic number, because the mean of its divisors is an integer number (1829520).

Almost surely, 2^36815840 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 36815840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43908480).

36815840 is an abundant number, since it is smaller than the sum of its proper divisors (51001120).

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

36815840 is a wasteful number, since it uses less digits than its factorization.

36815840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2235 (or 2227 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 36815840 is about 6067.6057881177. The cubic root of 36815840 is about 332.6684167620.

The spelling of 36815840 in words is "thirty-six million, eight hundred fifteen thousand, eight hundred forty".