28474087 has 2 divisors, whose sum is σ = 28474088. Its totient is φ = 28474086.

The previous prime is 28474013. The next prime is 28474093. The reversal of 28474087 is 78047482.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28474087 - 2⁷ = 28473959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28474097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14237043 + 14237044.

It is an arithmetic number, because the mean of its divisors is an integer number (14237044).

Almost surely, 2^28474087 is an apocalyptic number.

28474087 is a deficient number, since it is larger than the sum of its proper divisors (1).

28474087 is an equidigital number, since it uses as much as digits as its factorization.

28474087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100352, while the sum is 40.

The square root of 28474087 is about 5336.1115992828. Note that the first 3 decimals coincide. The cubic root of 28474087 is about 305.3631328325.

The spelling of 28474087 in words is "twenty-eight million, four hundred seventy-four thousand, eighty-seven".