20034816 has 72 divisors (see below), whose sum is σ = 56169120. Its totient is φ = 6322176.

The previous prime is 20034811. The next prime is 20034841. The reversal of 20034816 is 61843002.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20034811) 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, 13906 + ... + 15278.

Almost surely, 2^20034816 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 20034816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28084560).

20034816 is an abundant number, since it is smaller than the sum of its proper divisors (36134304).

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

20034816 is a wasteful number, since it uses less digits than its factorization.

20034816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411 (or 1397 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 20034816 is about 4476.0268095712. The cubic root of 20034816 is about 271.5991789570.

Multiplying 20034816 by its product of nonzero digits (1152), we get a palindrome (23080108032).

Adding to 20034816 its reverse (61843002), we get a palindrome (81877818).

The spelling of 20034816 in words is "twenty million, thirty-four thousand, eight hundred sixteen".