19847472 has 40 divisors (see below), whose sum is σ = 51455040. Its totient is φ = 6592320.

The previous prime is 19847453. The next prime is 19847479. The reversal of 19847472 is 27474891.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (19847479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17647 + ... + 18737.

It is an arithmetic number, because the mean of its divisors is an integer number (1286376).

Almost surely, 2^19847472 is an apocalyptic number.

19847472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19847472 is an abundant number, since it is smaller than the sum of its proper divisors (31607568).

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

19847472 is a wasteful number, since it uses less digits than its factorization.

19847472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481 (or 1475 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 19847472 is about 4455.0501680677. The cubic root of 19847472 is about 270.7499588623.

The spelling of 19847472 in words is "nineteen million, eight hundred forty-seven thousand, four hundred seventy-two".