20424316 has 36 divisors (see below), whose sum is σ = 41373640. Its totient is φ = 8791200.

The previous prime is 20424307. The next prime is 20424329. The reversal of 20424316 is 61342402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8086 + ... + 10306.

Almost surely, 2^20424316 is an apocalyptic number.

It is an amenable number.

20424316 is an abundant number, since it is smaller than the sum of its proper divisors (20949324).

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

20424316 is a wasteful number, since it uses less digits than its factorization.

20424316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266 (or 2253 counting only the distinct ones).

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

The square root of 20424316 is about 4519.3269410389. The cubic root of 20424316 is about 273.3479620699.

Adding to 20424316 its reverse (61342402), we get a palindrome (81766718).

The spelling of 20424316 in words is "twenty million, four hundred twenty-four thousand, three hundred sixteen".