28273951 has 2 divisors, whose sum is σ = 28273952. Its totient is φ = 28273950.

The previous prime is 28273937. The next prime is 28273967. The reversal of 28273951 is 15937282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28273951 - 2¹⁵ = 28241183 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28273951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28273901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14136975 + 14136976.

It is an arithmetic number, because the mean of its divisors is an integer number (14136976).

Almost surely, 2^28273951 is an apocalyptic number.

28273951 is a deficient number, since it is larger than the sum of its proper divisors (1).

28273951 is an equidigital number, since it uses as much as digits as its factorization.

28273951 is an odious number, because the sum of its binary digits is odd.

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

The square root of 28273951 is about 5317.3255495597. The cubic root of 28273951 is about 304.6460141158.

The spelling of 28273951 in words is "twenty-eight million, two hundred seventy-three thousand, nine hundred fifty-one".