2148440 has 32 divisors (see below), whose sum is σ = 5525280. Its totient is φ = 736512.

The previous prime is 2148437. The next prime is 2148449. The reversal of 2148440 is 448412.

2148440 = 551² + 552² + ... + 557².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2148449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3557 + ... + 4116.

It is an arithmetic number, because the mean of its divisors is an integer number (172665).

2^2148440 is an apocalyptic number.

2148440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2148440 is an abundant number, since it is smaller than the sum of its proper divisors (3376840).

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

2148440 is a wasteful number, since it uses less digits than its factorization.

2148440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7691 (or 7687 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 2148440 is about 1465.7557777474. The cubic root of 2148440 is about 129.0350644820.

The spelling of 2148440 in words is "two million, one hundred forty-eight thousand, four hundred forty".