15451648 has 40 divisors (see below), whose sum is σ = 31279248. Its totient is φ = 7624704.

The previous prime is 15451621. The next prime is 15451649. The reversal of 15451648 is 84615451.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15451649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52590 + ... + 52882.

Almost surely, 2^15451648 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 15451648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15639624).

15451648 is an abundant number, since it is smaller than the sum of its proper divisors (15827600).

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

15451648 is an equidigital number, since it uses as much as digits as its factorization.

15451648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 398 counting only the distinct ones).

The product of its digits is 19200, while the sum is 34.

The square root of 15451648 is about 3930.8584304195. The cubic root of 15451648 is about 249.0720156422.

The spelling of 15451648 in words is "fifteen million, four hundred fifty-one thousand, six hundred forty-eight".