20363136 has 64 divisors (see below), whose sum is σ = 56956800. Its totient is φ = 6428160.

The previous prime is 20363107. The next prime is 20363141. The reversal of 20363136 is 63136302.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5901 + ... + 8691.

It is an arithmetic number, because the mean of its divisors is an integer number (889950).

Almost surely, 2^20363136 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 20363136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28478400).

20363136 is an abundant number, since it is smaller than the sum of its proper divisors (36593664).

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

20363136 is a wasteful number, since it uses less digits than its factorization.

20363136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2827 (or 2815 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 20363136 is about 4512.5531575816. The cubic root of 20363136 is about 273.0747557893.

Adding to 20363136 its reverse (63136302), we get a palindrome (83499438).

The spelling of 20363136 in words is "twenty million, three hundred sixty-three thousand, one hundred thirty-six".