2721546 has 32 divisors (see below), whose sum is σ = 6120000. Its totient is φ = 896400.

The previous prime is 2721533. The next prime is 2721553. The reversal of 2721546 is 6451272.

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

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, 5205 + ... + 5703.

It is an arithmetic number, because the mean of its divisors is an integer number (191250).

2^2721546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2721546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3060000).

2721546 is an abundant number, since it is smaller than the sum of its proper divisors (3398454).

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

2721546 is a wasteful number, since it uses less digits than its factorization.

2721546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611 (or 605 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 2721546 is about 1649.7108837612. The cubic root of 2721546 is about 139.6170828814.

It can be divided in two parts, 27215 and 46, that added together give a triangular number (27261 = T₂₃₃).

The spelling of 2721546 in words is "two million, seven hundred twenty-one thousand, five hundred forty-six".