19630812 has 48 divisors (see below), whose sum is σ = 47803392. Its totient is φ = 6263040.

The previous prime is 19630811. The next prime is 19630823. The reversal of 19630812 is 21803691.

It is a self number, because there is not a number n which added to its sum of digits gives 19630812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19630811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41803 + ... + 42269.

It is an arithmetic number, because the mean of its divisors is an integer number (995904).

Almost surely, 2^19630812 is an apocalyptic number.

19630812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19630812 is an abundant number, since it is smaller than the sum of its proper divisors (28172580).

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

19630812 is a wasteful number, since it uses less digits than its factorization.

19630812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618 (or 616 counting only the distinct ones).

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

The square root of 19630812 is about 4430.6672183769. The cubic root of 19630812 is about 269.7611605293.

The spelling of 19630812 in words is "nineteen million, six hundred thirty thousand, eight hundred twelve".