15198849 has 12 divisors (see below), whose sum is σ = 22012900. Its totient is φ = 10105344.

The previous prime is 15198847. The next prime is 15198853. The reversal of 15198849 is 94889151.

It can be written as a sum of positive squares in 2 ways, for example, as 11512449 + 3686400 = 3393^2 + 1920^2 .

It is not a de Polignac number, because 15198849 - 2¹ = 15198847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15198847) 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 11 ways as a sum of consecutive naturals, for example, 1617 + ... + 5745.

Almost surely, 2^15198849 is an apocalyptic number.

It is an amenable number.

15198849 is a deficient number, since it is larger than the sum of its proper divisors (6814051).

15198849 is a wasteful number, since it uses less digits than its factorization.

15198849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4544 (or 4541 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The square root of 15198849 is about 3898.5701224936. The cubic root of 15198849 is about 247.7062132014.

The spelling of 15198849 in words is "fifteen million, one hundred ninety-eight thousand, eight hundred forty-nine".