20514224 has 20 divisors (see below), whose sum is σ = 41838840. Its totient is φ = 9717120.

The previous prime is 20514191. The next prime is 20514251. The reversal of 20514224 is 42241502.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20514196 and 20514205.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33437 + ... + 34044.

It is an arithmetic number, because the mean of its divisors is an integer number (2091942).

Almost surely, 2^20514224 is an apocalyptic number.

It is an amenable number.

20514224 is an abundant number, since it is smaller than the sum of its proper divisors (21324616).

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

20514224 is a wasteful number, since it uses less digits than its factorization.

20514224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67508 (or 67502 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 20514224 is about 4529.2630747176. The cubic root of 20514224 is about 273.7484682608.

Adding to 20514224 its reverse (42241502), we get a palindrome (62755726).

The spelling of 20514224 in words is "twenty million, five hundred fourteen thousand, two hundred twenty-four".