28248880662421 has 8 divisors (see below), whose sum is σ = 29741819129600. Its totient is φ = 26756557722720.

The previous prime is 28248880662259. The next prime is 28248880662437. The reversal of 28248880662421 is 12426608884282.

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

It is a cyclic number.

It is not a de Polignac number, because 28248880662421 - 2²³ = 28248872273813 is a prime.

It is a super-3 number, since 3×28248880662421³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28248880662421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28248880662521) 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, 153787656 + ... + 153971233.

It is an arithmetic number, because the mean of its divisors is an integer number (3717727391200).

Almost surely, 2^{28248880662421} is an apocalyptic number.

It is an amenable number.

28248880662421 is a deficient number, since it is larger than the sum of its proper divisors (1492938467179).

28248880662421 is a wasteful number, since it uses less digits than its factorization.

28248880662421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307763739.

The product of its (nonzero) digits is 37748736, while the sum is 61.

The spelling of 28248880662421 in words is "twenty-eight trillion, two hundred forty-eight billion, eight hundred eighty million, six hundred sixty-two thousand, four hundred twenty-one".