28951273 has 8 divisors (see below), whose sum is σ = 32534208. Its totient is φ = 25562064.

The previous prime is 28951267. The next prime is 28951277. The reversal of 28951273 is 37215982.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28951273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28951277) 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, 48115 + ... + 48712.

It is an arithmetic number, because the mean of its divisors is an integer number (4066776).

Almost surely, 2^28951273 is an apocalyptic number.

28951273 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28951273 is a deficient number, since it is larger than the sum of its proper divisors (3582935).

28951273 is a wasteful number, since it uses less digits than its factorization.

28951273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96863.

The product of its digits is 30240, while the sum is 37.

The square root of 28951273 is about 5380.6387167324. The cubic root of 28951273 is about 307.0595116409.

The spelling of 28951273 in words is "twenty-eight million, nine hundred fifty-one thousand, two hundred seventy-three".