36491840 has 112 divisors (see below), whose sum is σ = 108411264. Its totient is φ = 11366400.

The previous prime is 36491813. The next prime is 36491891. The reversal of 36491840 is 4819463.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 36491840.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23900 + ... + 25380.

Almost surely, 2^36491840 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 36491840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54205632).

36491840 is an abundant number, since it is smaller than the sum of its proper divisors (71919424).

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

36491840 is a wasteful number, since it uses less digits than its factorization.

36491840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516 (or 1506 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 36491840 is about 6040.8476226437. The cubic root of 36491840 is about 331.6896504643.

The spelling of 36491840 in words is "thirty-six million, four hundred ninety-one thousand, eight hundred forty".