20634124 has 48 divisors (see below), whose sum is σ = 44416512. Its totient is φ = 8186112.

The previous prime is 20634101. The next prime is 20634143. The reversal of 20634124 is 42143602.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20634095 and 20634104.

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, 31569 + ... + 32215.

It is an arithmetic number, because the mean of its divisors is an integer number (925344).

Almost surely, 2^20634124 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 20634124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22208256).

20634124 is an abundant number, since it is smaller than the sum of its proper divisors (23782388).

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

20634124 is a wasteful number, since it uses less digits than its factorization.

20634124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742 (or 740 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 20634124 is about 4542.4799394164. The cubic root of 20634124 is about 274.2807607509.

Adding to 20634124 its reverse (42143602), we get a palindrome (62777726).

The spelling of 20634124 in words is "twenty million, six hundred thirty-four thousand, one hundred twenty-four".