28470319 has 2 divisors, whose sum is σ = 28470320. Its totient is φ = 28470318.

The previous prime is 28470317. The next prime is 28470331. The reversal of 28470319 is 91307482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28470319 - 2¹ = 28470317 is a prime.

It is a super-2 number, since 2×28470319² = 1621118127923522, which contains 22 as substring.

Together with 28470317, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28470311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14235159 + 14235160.

It is an arithmetic number, because the mean of its divisors is an integer number (14235160).

Almost surely, 2^28470319 is an apocalyptic number.

28470319 is a deficient number, since it is larger than the sum of its proper divisors (1).

28470319 is an equidigital number, since it uses as much as digits as its factorization.

28470319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 28470319 is about 5335.7585215225. The cubic root of 28470319 is about 305.3496625845.

The spelling of 28470319 in words is "twenty-eight million, four hundred seventy thousand, three hundred nineteen".