2721492 has 48 divisors (see below), whose sum is σ = 7150080. Its totient is φ = 895104.

The previous prime is 2721451. The next prime is 2721517. The reversal of 2721492 is 2941272.

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is a congruent number.

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, 12093 + ... + 12315.

It is an arithmetic number, because the mean of its divisors is an integer number (148960).

2^2721492 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 2721492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3575040).

2721492 is an abundant number, since it is smaller than the sum of its proper divisors (4428588).

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

2721492 is a wasteful number, since it uses less digits than its factorization.

2721492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 341 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 2721492 is about 1649.6945171758. The cubic root of 2721492 is about 139.6161594636.

It can be divided in two parts, 272 and 1492, that added together give a square (1764 = 42²).

The spelling of 2721492 in words is "two million, seven hundred twenty-one thousand, four hundred ninety-two".