28794907219 has 16 divisors (see below), whose sum is σ = 31419182592. Its totient is φ = 26229830688.

The previous prime is 28794907217. The next prime is 28794907259. The reversal of 28794907219 is 91270949782.

It is a cyclic number.

It is not a de Polignac number, because 28794907219 - 2¹ = 28794907217 is a prime.

It is a super-2 number, since 2×28794907219² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28794907217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 963942 + ... + 993364.

It is an arithmetic number, because the mean of its divisors is an integer number (1963698912).

Almost surely, 2^28794907219 is an apocalyptic number.

28794907219 is a deficient number, since it is larger than the sum of its proper divisors (2624275373).

28794907219 is a wasteful number, since it uses less digits than its factorization.

28794907219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30426.

The product of its (nonzero) digits is 4572288, while the sum is 58.

The spelling of 28794907219 in words is "twenty-eight billion, seven hundred ninety-four million, nine hundred seven thousand, two hundred nineteen".