28477307 has 2 divisors, whose sum is σ = 28477308. Its totient is φ = 28477306.

The previous prime is 28477303. The next prime is 28477349. The reversal of 28477307 is 70377482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28477307 - 2² = 28477303 is a prime.

It is not a weakly prime, because it can be changed into another prime (28477303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14238653 + 14238654.

It is an arithmetic number, because the mean of its divisors is an integer number (14238654).

Almost surely, 2^28477307 is an apocalyptic number.

28477307 is a deficient number, since it is larger than the sum of its proper divisors (1).

28477307 is an equidigital number, since it uses as much as digits as its factorization.

28477307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 28477307 is about 5336.4133085810. The cubic root of 28477307 is about 305.3746430900.

The spelling of 28477307 in words is "twenty-eight million, four hundred seventy-seven thousand, three hundred seven".