28807463821 has 8 divisors (see below), whose sum is σ = 30110667840. Its totient is φ = 27508485312.

The previous prime is 28807463813. The next prime is 28807463863. The reversal of 28807463821 is 12836470882.

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 28807463821 - 2³ = 28807463813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28807461821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1042431 + ... + 1069708.

It is an arithmetic number, because the mean of its divisors is an integer number (3763833480).

Almost surely, 2^28807463821 is an apocalyptic number.

It is an amenable number.

28807463821 is a deficient number, since it is larger than the sum of its proper divisors (1303204019).

28807463821 is a wasteful number, since it uses less digits than its factorization.

28807463821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112755.

The product of its (nonzero) digits is 1032192, while the sum is 49.

The spelling of 28807463821 in words is "twenty-eight billion, eight hundred seven million, four hundred sixty-three thousand, eight hundred twenty-one".