15261648 has 80 divisors (see below), whose sum is σ = 42586560. Its totient is φ = 4691968.

The previous prime is 15261647. The next prime is 15261661. The reversal of 15261648 is 84616251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15261647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47986 + ... + 48302.

It is an arithmetic number, because the mean of its divisors is an integer number (532332).

Almost surely, 2^15261648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15261648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21293280).

15261648 is an abundant number, since it is smaller than the sum of its proper divisors (27324912).

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

15261648 is a wasteful number, since it uses less digits than its factorization.

15261648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 398 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 15261648 is about 3906.6159268605. The cubic root of 15261648 is about 248.0469040664.

Adding to 15261648 its reverse (84616251), we get a palindrome (99877899).

The spelling of 15261648 in words is "fifteen million, two hundred sixty-one thousand, six hundred forty-eight".