28004360511 has 8 divisors (see below), whose sum is σ = 37576976944. Its totient is φ = 18550658880.

The previous prime is 28004360507. The next prime is 28004360543. The reversal of 28004360511 is 11506340082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28004360511 - 2² = 28004360507 is a prime.

It is a super-2 number, since 2×28004360511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28004364511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29728150 + ... + 29729091.

It is an arithmetic number, because the mean of its divisors is an integer number (4697122118).

Almost surely, 2^28004360511 is an apocalyptic number.

28004360511 is a deficient number, since it is larger than the sum of its proper divisors (9572616433).

28004360511 is a wasteful number, since it uses less digits than its factorization.

28004360511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59457401.

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 28004360511 in words is "twenty-eight billion, four million, three hundred sixty thousand, five hundred eleven".