28597273 has 2 divisors, whose sum is σ = 28597274. Its totient is φ = 28597272.

The previous prime is 28597253. The next prime is 28597307. The reversal of 28597273 is 37279582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20684304 + 7912969 = 4548^2 + 2813^2 .

It is a cyclic number.

It is not a de Polignac number, because 28597273 - 2¹³ = 28589081 is a prime.

It is not a weakly prime, because it can be changed into another prime (28597253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14298636 + 14298637.

It is an arithmetic number, because the mean of its divisors is an integer number (14298637).

Almost surely, 2^28597273 is an apocalyptic number.

It is an amenable number.

28597273 is a deficient number, since it is larger than the sum of its proper divisors (1).

28597273 is an equidigital number, since it uses as much as digits as its factorization.

28597273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 28597273 is about 5347.6418167263. The cubic root of 28597273 is about 305.8028583370.

The spelling of 28597273 in words is "twenty-eight million, five hundred ninety-seven thousand, two hundred seventy-three".