2581284 has 24 divisors (see below), whose sum is σ = 6054048. Its totient is φ = 856000.

The previous prime is 2581279. The next prime is 2581289. The reversal of 2581284 is 4821852.

It is an interprime number because it is at equal distance from previous prime (2581279) and next prime (2581289).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2581289) 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, 2584 + ... + 3440.

It is an arithmetic number, because the mean of its divisors is an integer number (252252).

2^2581284 is an apocalyptic number.

It is an amenable number.

2581284 is an abundant number, since it is smaller than the sum of its proper divisors (3472764).

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

2581284 is a wasteful number, since it uses less digits than its factorization.

2581284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115 (or 1113 counting only the distinct ones).

The product of its digits is 5120, while the sum is 30.

The square root of 2581284 is about 1606.6374824459. The cubic root of 2581284 is about 137.1761458130.

The spelling of 2581284 in words is "two million, five hundred eighty-one thousand, two hundred eighty-four".