2281940 has 24 divisors (see below), whose sum is σ = 4862592. Its totient is φ = 899360.

The previous prime is 2281921. The next prime is 2281973. The reversal of 2281940 is 491822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 617 + ... + 2223.

It is an arithmetic number, because the mean of its divisors is an integer number (202608).

2^2281940 is an apocalyptic number.

2281940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2281940 is an abundant number, since it is smaller than the sum of its proper divisors (2580652).

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

2281940 is a wasteful number, since it uses less digits than its factorization.

2281940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687 (or 1685 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2281940 is about 1510.6091486549. The cubic root of 2281940 is about 131.6542066580.

The spelling of 2281940 in words is "two million, two hundred eighty-one thousand, nine hundred forty".