28471061 has 2 divisors, whose sum is σ = 28471062. Its totient is φ = 28471060.

The previous prime is 28471043. The next prime is 28471067. The reversal of 28471061 is 16017482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28462225 + 8836 = 5335^2 + 94^2 .

It is a cyclic number.

It is not a de Polignac number, because 28471061 - 2⁶ = 28470997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28471067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14235530 + 14235531.

It is an arithmetic number, because the mean of its divisors is an integer number (14235531).

Almost surely, 2^28471061 is an apocalyptic number.

It is an amenable number.

28471061 is a deficient number, since it is larger than the sum of its proper divisors (1).

28471061 is an equidigital number, since it uses as much as digits as its factorization.

28471061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 28471061 is about 5335.8280519522. The cubic root of 28471061 is about 305.3523152591.

The spelling of 28471061 in words is "twenty-eight million, four hundred seventy-one thousand, sixty-one".