19791248 has 10 divisors (see below), whose sum is σ = 38345574. Its totient is φ = 9895616.

The previous prime is 19791241. The next prime is 19791251. The reversal of 19791248 is 84219791.

It can be written as a sum of positive squares in only one way, i.e., 13778944 + 6012304 = 3712^2 + 2452^2 .

It is not an unprimeable number, because it can be changed into a prime (19791241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 618461 + ... + 618492.

Almost surely, 2^19791248 is an apocalyptic number.

It is an amenable number.

19791248 is a deficient number, since it is larger than the sum of its proper divisors (18554326).

19791248 is a wasteful number, since it uses less digits than its factorization.

19791248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236961 (or 1236955 counting only the distinct ones).

The product of its digits is 36288, while the sum is 41.

The square root of 19791248 is about 4448.7355506930. The cubic root of 19791248 is about 270.4940565386.

The spelling of 19791248 in words is "nineteen million, seven hundred ninety-one thousand, two hundred forty-eight".