2781492 has 24 divisors (see below), whose sum is σ = 7417536. Its totient is φ = 794688.

The previous prime is 2781491. The next prime is 2781497. The reversal of 2781492 is 2941872.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2781491) 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, 16473 + ... + 16640.

It is an arithmetic number, because the mean of its divisors is an integer number (309064).

2^2781492 is an apocalyptic number.

It is an amenable number.

2781492 is an abundant number, since it is smaller than the sum of its proper divisors (4636044).

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

2781492 is a wasteful number, since it uses less digits than its factorization.

2781492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33127 (or 33125 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 2781492 is about 1667.7805611051. The cubic root of 2781492 is about 140.6347369060.

It can be divided in two parts, 278 and 1492, that added together give a triangular number (1770 = T₅₉).

The spelling of 2781492 in words is "two million, seven hundred eighty-one thousand, four hundred ninety-two".