15648447 has 8 divisors (see below), whose sum is σ = 21428656. Its totient is φ = 10150272.

The previous prime is 15648433. The next prime is 15648461. The reversal of 15648447 is 74484651.

It is an interprime number because it is at equal distance from previous prime (15648433) and next prime (15648461).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15648447 - 2¹⁴ = 15632063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15648407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70378 + ... + 70599.

It is an arithmetic number, because the mean of its divisors is an integer number (2678582).

Almost surely, 2^15648447 is an apocalyptic number.

15648447 is a deficient number, since it is larger than the sum of its proper divisors (5780209).

15648447 is a wasteful number, since it uses less digits than its factorization.

15648447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141017.

The product of its digits is 107520, while the sum is 39.

The square root of 15648447 is about 3955.8118003768. The cubic root of 15648447 is about 250.1249881681.

It can be divided in two parts, 1564 and 8447, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 15648447 in words is "fifteen million, six hundred forty-eight thousand, four hundred forty-seven".