15861048 has 64 divisors (see below), whose sum is σ = 47712000. Its totient is φ = 4292352.

The previous prime is 15861031. The next prime is 15861059. The reversal of 15861048 is 84016851.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 708 + ... + 5676.

It is an arithmetic number, because the mean of its divisors is an integer number (745500).

Almost surely, 2^15861048 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 15861048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23856000).

15861048 is an abundant number, since it is smaller than the sum of its proper divisors (31850952).

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

15861048 is a wasteful number, since it uses less digits than its factorization.

15861048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5004 (or 5000 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 15861048 is about 3982.5931250882. The cubic root of 15861048 is about 251.2526357982.

Adding to 15861048 its reverse (84016851), we get a palindrome (99877899).

The spelling of 15861048 in words is "fifteen million, eight hundred sixty-one thousand, forty-eight".