28273011 has 8 divisors (see below), whose sum is σ = 40597200. Its totient is φ = 17398752.

The previous prime is 28273001. The next prime is 28273013. The reversal of 28273011 is 11037282.

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

It is not a de Polignac number, because 28273011 - 2⁶ = 28272947 is a prime.

It is a super-2 number, since 2×28273011² = 1598726302012242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28273013) 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, 362436 + ... + 362513.

It is an arithmetic number, because the mean of its divisors is an integer number (5074650).

Almost surely, 2^28273011 is an apocalyptic number.

28273011 is a deficient number, since it is larger than the sum of its proper divisors (12324189).

28273011 is a wasteful number, since it uses less digits than its factorization.

28273011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724965.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 28273011 is about 5317.2371585251. The cubic root of 28273011 is about 304.6426379761.

The spelling of 28273011 in words is "twenty-eight million, two hundred seventy-three thousand, eleven".