36189840 has 40 divisors (see below), whose sum is σ = 112189248. Its totient is φ = 9650560.

The previous prime is 36189817. The next prime is 36189841. The reversal of 36189840 is 4898163.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (36189841) 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, 75156 + ... + 75635.

Almost surely, 2^36189840 is an apocalyptic number.

36189840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

36189840 is an abundant number, since it is smaller than the sum of its proper divisors (75999408).

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

36189840 is a wasteful number, since it uses less digits than its factorization.

36189840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150807 (or 150801 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 36189840 is about 6015.7991987765. The cubic root of 36189840 is about 330.7721130783.

The spelling of 36189840 in words is "thirty-six million, one hundred eighty-nine thousand, eight hundred forty".