2115456 has 64 divisors (see below), whose sum is σ = 6430080. Its totient is φ = 603648.

The previous prime is 2115437. The next prime is 2115457. The reversal of 2115456 is 6545112.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2295 + ... + 3081.

It is an arithmetic number, because the mean of its divisors is an integer number (100470).

2^2115456 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 2115456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3215040).

2115456 is an abundant number, since it is smaller than the sum of its proper divisors (4314624).

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

2115456 is an equidigital number, since it uses as much as digits as its factorization.

2115456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811 (or 799 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 2115456 is about 1454.4607248049. The cubic root of 2115456 is about 128.3713176294.

The spelling of 2115456 in words is "two million, one hundred fifteen thousand, four hundred fifty-six".