28470099 has 24 divisors (see below), whose sum is σ = 44270080. Its totient is φ = 15940080.

The previous prime is 28470049. The next prime is 28470137. The reversal of 28470099 is 99007482.

It is not a de Polignac number, because 28470099 - 2¹³ = 28461907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28470049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 217264 + ... + 217394.

Almost surely, 2^28470099 is an apocalyptic number.

28470099 is a deficient number, since it is larger than the sum of its proper divisors (15799981).

28470099 is an equidigital number, since it uses as much as digits as its factorization.

28470099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 28470099 is about 5335.7379058571. The cubic root of 28470099 is about 305.3488760683.

The spelling of 28470099 in words is "twenty-eight million, four hundred seventy thousand, ninety-nine".