15220048 has 20 divisors (see below), whose sum is σ = 29551060. Its totient is φ = 7593984.

The previous prime is 15220031. The next prime is 15220067. The reversal of 15220048 is 84002251.

It can be written as a sum of positive squares in 2 ways, for example, as 8809024 + 6411024 = 2968^2 + 2532^2 .

It is a super-2 number, since 2×15220048² = 463299722244608, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11686 + ... + 12922.

It is an arithmetic number, because the mean of its divisors is an integer number (1477553).

Almost surely, 2^15220048 is an apocalyptic number.

It is an amenable number.

15220048 is a deficient number, since it is larger than the sum of its proper divisors (14331012).

15220048 is a wasteful number, since it uses less digits than its factorization.

15220048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014 (or 2008 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 15220048 is about 3901.2879924456. The cubic root of 15220048 is about 247.8213246488.

Adding to 15220048 its reverse (84002251), we get a palindrome (99222299).

The spelling of 15220048 in words is "fifteen million, two hundred twenty thousand, forty-eight".