28951293 has 16 divisors (see below), whose sum is σ = 44265600. Its totient is φ = 16487616.

The previous prime is 28951291. The next prime is 28951297. The reversal of 28951293 is 39215982.

It is not a de Polignac number, because 28951293 - 2¹ = 28951291 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28951291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4483 + ... + 8831.

It is an arithmetic number, because the mean of its divisors is an integer number (2766600).

Almost surely, 2^28951293 is an apocalyptic number.

It is an amenable number.

28951293 is a deficient number, since it is larger than the sum of its proper divisors (15314307).

28951293 is a wasteful number, since it uses less digits than its factorization.

28951293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4676.

The product of its digits is 38880, while the sum is 39.

The square root of 28951293 is about 5380.6405752475. The cubic root of 28951293 is about 307.0595823481.

The spelling of 28951293 in words is "twenty-eight million, nine hundred fifty-one thousand, two hundred ninety-three".