28505019574 has 8 divisors (see below), whose sum is σ = 43564275360. Its totient is φ = 13983594456.

The previous prime is 28505019563. The next prime is 28505019577. The reversal of 28505019574 is 47591050582.

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

It is a super-2 number, since 2×28505019574² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28505019577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134457534 + ... + 134457745.

It is an arithmetic number, because the mean of its divisors is an integer number (5445534420).

Almost surely, 2^28505019574 is an apocalyptic number.

28505019574 is a deficient number, since it is larger than the sum of its proper divisors (15059255786).

28505019574 is a wasteful number, since it uses less digits than its factorization.

28505019574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268915334.

The product of its (nonzero) digits is 504000, while the sum is 46.

The spelling of 28505019574 in words is "twenty-eight billion, five hundred five million, nineteen thousand, five hundred seventy-four".