2281540 has 12 divisors (see below), whose sum is σ = 4791276. Its totient is φ = 912608.

The previous prime is 2281529. The next prime is 2281567. The reversal of 2281540 is 451822.

It can be written as a sum of positive squares in 2 ways, for example, as 304704 + 1976836 = 552^2 + 1406^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 57019 + ... + 57058.

It is an arithmetic number, because the mean of its divisors is an integer number (399273).

2^2281540 is an apocalyptic number.

2281540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2281540 is an abundant number, since it is smaller than the sum of its proper divisors (2509736).

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

2281540 is a wasteful number, since it uses less digits than its factorization.

2281540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114086 (or 114084 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2281540 is about 1510.4767459316. The cubic root of 2281540 is about 131.6465136774.

The spelling of 2281540 in words is "two million, two hundred eighty-one thousand, five hundred forty".