28475019 has 12 divisors (see below), whose sum is σ = 42457792. Its totient is φ = 18370800.

The previous prime is 28475011. The next prime is 28475063. The reversal of 28475019 is 91057482.

It is not a de Polignac number, because 28475019 - 2³ = 28475011 is a prime.

It is a super-2 number, since 2×28475019² = 1621653414100722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28475011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50752 + ... + 51309.

Almost surely, 2^28475019 is an apocalyptic number.

28475019 is a deficient number, since it is larger than the sum of its proper divisors (13982773).

28475019 is a wasteful number, since it uses less digits than its factorization.

28475019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102098 (or 102095 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 28475019 is about 5336.1989280761. The cubic root of 28475019 is about 305.3664644621.

The spelling of 28475019 in words is "twenty-eight million, four hundred seventy-five thousand, nineteen".