28808570072441 has 4 divisors (see below), whose sum is σ = 28809468435300. Its totient is φ = 28807671709584.

The previous prime is 28808570072383. The next prime is 28808570072449. The reversal of 28808570072441 is 14427007580882.

It is a happy number.

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 17351556870400 + 11457013202041 = 4165520^2 + 3384821^2 .

It is a cyclic number.

It is not a de Polignac number, because 28808570072441 - 2³⁸ = 28533692165497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28808570072449) 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, 449133326 + ... + 449197463.

It is an arithmetic number, because the mean of its divisors is an integer number (7202367108825).

Almost surely, 2^{28808570072441} is an apocalyptic number.

It is an amenable number.

28808570072441 is a deficient number, since it is larger than the sum of its proper divisors (898362859).

28808570072441 is an equidigital number, since it uses as much as digits as its factorization.

28808570072441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898362858.

The product of its (nonzero) digits is 8028160, while the sum is 56.

The spelling of 28808570072441 in words is "twenty-eight trillion, eight hundred eight billion, five hundred seventy million, seventy-two thousand, four hundred forty-one".