28019533572078 has 8 divisors (see below), whose sum is σ = 56039067144168. Its totient is φ = 9339844524024.

The previous prime is 28019533572053. The next prime is 28019533572089. The reversal of 28019533572078 is 87027533591082.

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

28019533572078 is an admirable number.

It is a super-2 number, since 2×28019533572078² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2334961131001 + ... + 2334961131012.

It is an arithmetic number, because the mean of its divisors is an integer number (7004883393021).

Almost surely, 2^{28019533572078} is an apocalyptic number.

28019533572078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28019533572078 is a wasteful number, since it uses less digits than its factorization.

28019533572078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4669922262018.

The product of its (nonzero) digits is 25401600, while the sum is 60.

The spelling of 28019533572078 in words is "twenty-eight trillion, nineteen billion, five hundred thirty-three million, five hundred seventy-two thousand, seventy-eight".