28942449 has 8 divisors (see below), whose sum is σ = 40860000. Its totient is φ = 18159936.

The previous prime is 28942447. The next prime is 28942451. The reversal of 28942449 is 94424982.

It is an interprime number because it is at equal distance from previous prime (28942447) and next prime (28942451).

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

It is not a de Polignac number, because 28942449 - 2¹ = 28942447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28942449.

It is not an unprimeable number, because it can be changed into a prime (28942447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283699 + ... + 283800.

It is an arithmetic number, because the mean of its divisors is an integer number (5107500).

Almost surely, 2^28942449 is an apocalyptic number.

It is an amenable number.

28942449 is a deficient number, since it is larger than the sum of its proper divisors (11917551).

28942449 is a wasteful number, since it uses less digits than its factorization.

28942449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567519.

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

The square root of 28942449 is about 5379.8186772418. The cubic root of 28942449 is about 307.0283124550.

The spelling of 28942449 in words is "twenty-eight million, nine hundred forty-two thousand, four hundred forty-nine".