2115144 has 48 divisors (see below), whose sum is σ = 5931900. Its totient is φ = 680064.

The previous prime is 2115133. The next prime is 2115181. The reversal of 2115144 is 4415112.

It can be written as a sum of positive squares in 2 ways, for example, as 1855044 + 260100 = 1362^2 + 510^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1582 + ... + 2594.

2^2115144 is an apocalyptic number.

2115144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2115144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2965950).

2115144 is an abundant number, since it is smaller than the sum of its proper divisors (3816756).

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

2115144 is a wasteful number, since it uses less digits than its factorization.

2115144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 1047 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 2115144 is about 1454.3534646021. The cubic root of 2115144 is about 128.3650063313.

Subtracting 2115144 from its reverse (4415112), we obtain a cube (2299968 = 132³).

The spelling of 2115144 in words is "two million, one hundred fifteen thousand, one hundred forty-four".