20000024 has 64 divisors (see below), whose sum is σ = 44906400. Its totient is φ = 8243200.

The previous prime is 20000023. The next prime is 20000033. The reversal of 20000024 is 42000002.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 19999966 and 20000020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43154 + ... + 43614.

Almost surely, 2^20000024 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 20000024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22453200).

20000024 is an abundant number, since it is smaller than the sum of its proper divisors (24906376).

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

20000024 is a wasteful number, since it uses less digits than its factorization.

20000024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 20000024 is about 4472.1386382803. The cubic root of 20000024 is about 271.4418702362.

Adding to 20000024 its reverse (42000002), we get a palindrome (62000026).

It can be divided in two parts, 2000002 and 4, that multiplied together give a palindrome (8000008).

The spelling of 20000024 in words is "twenty million, twenty-four", and thus it is an aban number.