28942494 has 16 divisors (see below), whose sum is σ = 66154368. Its totient is φ = 8269272.

The previous prime is 28942489. The next prime is 28942513. The reversal of 28942494 is 49424982.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 689107 = 28942494 / (2 + 8 + 9 + 4 + 2 + 4 + 9 + 4).

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 7 ways as a sum of consecutive naturals, for example, 344512 + ... + 344595.

It is an arithmetic number, because the mean of its divisors is an integer number (4134648).

Almost surely, 2^28942494 is an apocalyptic number.

28942494 is an abundant number, since it is smaller than the sum of its proper divisors (37211874).

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

28942494 is a wasteful number, since it uses less digits than its factorization.

28942494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689119.

The product of its digits is 165888, while the sum is 42.

The square root of 28942494 is about 5379.8228595373. The cubic root of 28942494 is about 307.0284715784.

The spelling of 28942494 in words is "twenty-eight million, nine hundred forty-two thousand, four hundred ninety-four".