2728942 has 8 divisors (see below), whose sum is σ = 4334256. Its totient is φ = 1284192.

The previous prime is 2728939. The next prime is 2728967. The reversal of 2728942 is 2498272.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 80263 = 2728942 / (2 + 7 + 2 + 8 + 9 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 2728898 and 2728907.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 40098 + ... + 40165.

It is an arithmetic number, because the mean of its divisors is an integer number (541782).

2^2728942 is an apocalyptic number.

2728942 is a deficient number, since it is larger than the sum of its proper divisors (1605314).

2728942 is a wasteful number, since it uses less digits than its factorization.

2728942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80282.

The product of its digits is 16128, while the sum is 34.

The square root of 2728942 is about 1651.9509677954. The cubic root of 2728942 is about 139.7434416935.

The spelling of 2728942 in words is "two million, seven hundred twenty-eight thousand, nine hundred forty-two".