16224724 has 12 divisors (see below), whose sum is σ = 28432404. Its totient is φ = 8101184.

The previous prime is 16224713. The next prime is 16224737. The reversal of 16224724 is 42742261.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9412624 + 6812100 = 3068^2 + 2610^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16224692 and 16224701.

It is a congruent number.

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, 1062 + ... + 5794.

It is an arithmetic number, because the mean of its divisors is an integer number (2369367).

Almost surely, 2^16224724 is an apocalyptic number.

It is an amenable number.

16224724 is a deficient number, since it is larger than the sum of its proper divisors (12207680).

16224724 is a wasteful number, since it uses less digits than its factorization.

16224724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5594 (or 5592 counting only the distinct ones).

The product of its digits is 5376, while the sum is 28.

The square root of 16224724 is about 4027.9925521282. The cubic root of 16224724 is about 253.1584565644.

Adding to 16224724 its reverse (42742261), we get a palindrome (58966985).

The spelling of 16224724 in words is "sixteen million, two hundred twenty-four thousand, seven hundred twenty-four".