2791230 has 64 divisors (see below), whose sum is σ = 7656768. Its totient is φ = 645120.

The previous prime is 2791199. The next prime is 2791237. The reversal of 2791230 is 321972.

It is a self number, because there is not a number n which added to its sum of digits gives 2791230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2791237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6420 + ... + 6840.

It is an arithmetic number, because the mean of its divisors is an integer number (119637).

2^2791230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2791230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3828384).

2791230 is an abundant number, since it is smaller than the sum of its proper divisors (4865538).

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

2791230 is a wasteful number, since it uses less digits than its factorization.

2791230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 2791230 is about 1670.6974591469. The cubic root of 2791230 is about 140.7986664281.

The spelling of 2791230 in words is "two million, seven hundred ninety-one thousand, two hundred thirty".