19470812 has 12 divisors (see below), whose sum is σ = 34142976. Its totient is φ = 9715680.

The previous prime is 19470809. The next prime is 19470817. The reversal of 19470812 is 21807491.

It is a super-2 number, since 2×19470812² = 758225039878688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19470817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2588 + ... + 6755.

It is an arithmetic number, because the mean of its divisors is an integer number (2845248).

Almost surely, 2^19470812 is an apocalyptic number.

It is an amenable number.

19470812 is a deficient number, since it is larger than the sum of its proper divisors (14672164).

19470812 is a wasteful number, since it uses less digits than its factorization.

19470812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9868 (or 9866 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 19470812 is about 4412.5743053234. The cubic root of 19470812 is about 269.0262684923.

The spelling of 19470812 in words is "nineteen million, four hundred seventy thousand, eight hundred twelve".