2728451 has 4 divisors (see below), whose sum is σ = 2976504. Its totient is φ = 2480400.

The previous prime is 2728447. The next prime is 2728471. The reversal of 2728451 is 1548272.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2728451 - 2² = 2728447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2728471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124010 + ... + 124031.

It is an arithmetic number, because the mean of its divisors is an integer number (744126).

2^2728451 is an apocalyptic number.

2728451 is a deficient number, since it is larger than the sum of its proper divisors (248053).

2728451 is a wasteful number, since it uses less digits than its factorization.

2728451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248052.

The product of its digits is 4480, while the sum is 29.

The square root of 2728451 is about 1651.8023489510. The cubic root of 2728451 is about 139.7350601613.

The spelling of 2728451 in words is "two million, seven hundred twenty-eight thousand, four hundred fifty-one".