19924212 has 48 divisors (see below), whose sum is σ = 57964032. Its totient is φ = 5174880.

The previous prime is 19924211. The next prime is 19924213. The reversal of 19924212 is 21242991.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (19924211) and next prime (19924213).

It is a self number, because there is not a number n which added to its sum of digits gives 19924212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19924211) 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, 9858 + ... + 11705.

It is an arithmetic number, because the mean of its divisors is an integer number (1207584).

Almost surely, 2^19924212 is an apocalyptic number.

19924212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19924212 is an abundant number, since it is smaller than the sum of its proper divisors (38039820).

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

19924212 is a wasteful number, since it uses less digits than its factorization.

19924212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21588 (or 21586 counting only the distinct ones).

The product of its digits is 2592, while the sum is 30.

The square root of 19924212 is about 4463.6545565265. The cubic root of 19924212 is about 271.0984605213.

The spelling of 19924212 in words is "nineteen million, nine hundred twenty-four thousand, two hundred twelve".