28049263 has 8 divisors (see below), whose sum is σ = 32209920. Its totient is φ = 24157080.

The previous prime is 28049257. The next prime is 28049291. The reversal of 28049263 is 36294082.

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

It is a cyclic number.

It is not a de Polignac number, because 28049263 - 2⁹ = 28048751 is a prime.

It is a super-2 number, since 2×28049263² = 1573522309686338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28049363) 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, 66895 + ... + 67312.

It is an arithmetic number, because the mean of its divisors is an integer number (4026240).

Almost surely, 2^28049263 is an apocalyptic number.

28049263 is a deficient number, since it is larger than the sum of its proper divisors (4160657).

28049263 is a wasteful number, since it uses less digits than its factorization.

28049263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134237.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 28049263 is about 5296.1554924303. The cubic root of 28049263 is about 303.8368779472.

The spelling of 28049263 in words is "twenty-eight million, forty-nine thousand, two hundred sixty-three".