28523461 has 2 divisors, whose sum is σ = 28523462. Its totient is φ = 28523460.

The previous prime is 28523431. The next prime is 28523477. The reversal of 28523461 is 16432582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28026436 + 497025 = 5294^2 + 705^2 .

It is a cyclic number.

It is not a de Polignac number, because 28523461 - 2⁷ = 28523333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28523431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14261730 + 14261731.

It is an arithmetic number, because the mean of its divisors is an integer number (14261731).

Almost surely, 2^28523461 is an apocalyptic number.

It is an amenable number.

28523461 is a deficient number, since it is larger than the sum of its proper divisors (1).

28523461 is an equidigital number, since it uses as much as digits as its factorization.

28523461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 31.

The square root of 28523461 is about 5340.7359979688. The cubic root of 28523461 is about 305.5395305658.

The spelling of 28523461 in words is "twenty-eight million, five hundred twenty-three thousand, four hundred sixty-one".