2581796 has 48 divisors (see below), whose sum is σ = 5698560. Its totient is φ = 997920.

The previous prime is 2581771. The next prime is 2581829. The reversal of 2581796 is 6971852.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12131 + ... + 12341.

It is an arithmetic number, because the mean of its divisors is an integer number (118720).

2^2581796 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2581796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2849280).

2581796 is an abundant number, since it is smaller than the sum of its proper divisors (3116764).

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

2581796 is a wasteful number, since it uses less digits than its factorization.

2581796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 262 counting only the distinct ones).

The product of its digits is 30240, while the sum is 38.

The square root of 2581796 is about 1606.7968135393. The cubic root of 2581796 is about 137.1852148840.

It can be divided in two parts, 25 and 81796, that multiplied together give a square (2044900 = 1430²).

The spelling of 2581796 in words is "two million, five hundred eighty-one thousand, seven hundred ninety-six".