28874587444601 has 4 divisors (see below), whose sum is σ = 28874734809204. Its totient is φ = 28874440080000.

The previous prime is 28874587444589. The next prime is 28874587444609. The reversal of 28874587444601 is 10644478547882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19747536192400 + 9127051252201 = 4443820^2 + 3021101^2 .

It is a cyclic number.

It is not a de Polignac number, because 28874587444601 - 2¹⁰ = 28874587443577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28874587444609) 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, 73388000 + ... + 73780401.

It is an arithmetic number, because the mean of its divisors is an integer number (7218683702301).

Almost surely, 2^{28874587444601} is an apocalyptic number.

It is an amenable number.

28874587444601 is a deficient number, since it is larger than the sum of its proper divisors (147364603).

28874587444601 is a wasteful number, since it uses less digits than its factorization.

28874587444601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147364602.

The product of its (nonzero) digits is 385351680, while the sum is 68.

The spelling of 28874587444601 in words is "twenty-eight trillion, eight hundred seventy-four billion, five hundred eighty-seven million, four hundred forty-four thousand, six hundred one".