2451648 has 42 divisors (see below), whose sum is σ = 6544564. Its totient is φ = 809984.

The previous prime is 2451643. The next prime is 2451667. The reversal of 2451648 is 8461542.

2451648 is nontrivially palindromic in base 15.

It is a zygodrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (2451641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21640 + ... + 21752.

2^2451648 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 2451648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3272282).

2451648 is an abundant number, since it is smaller than the sum of its proper divisors (4092916).

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

2451648 is an equidigital number, since it uses as much as digits as its factorization.

2451648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 118 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 2451648 is about 1565.7739300423. The cubic root of 2451648 is about 134.8401949947.

The spelling of 2451648 in words is "two million, four hundred fifty-one thousand, six hundred forty-eight".