28972367 has 2 divisors, whose sum is σ = 28972368. Its totient is φ = 28972366.

The previous prime is 28972319. The next prime is 28972379. The reversal of 28972367 is 76327982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28972367 - 2¹⁶ = 28906831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28972667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14486183 + 14486184.

It is an arithmetic number, because the mean of its divisors is an integer number (14486184).

Almost surely, 2^28972367 is an apocalyptic number.

28972367 is a deficient number, since it is larger than the sum of its proper divisors (1).

28972367 is an equidigital number, since it uses as much as digits as its factorization.

28972367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 44.

The square root of 28972367 is about 5382.5985360233. The cubic root of 28972367 is about 307.1340684188.

The spelling of 28972367 in words is "twenty-eight million, nine hundred seventy-two thousand, three hundred sixty-seven".