28207215051 has 8 divisors (see below), whose sum is σ = 37613475024. Its totient is φ = 18802882560.

The previous prime is 28207215011. The next prime is 28207215059. The reversal of 28207215051 is 15051270282.

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

It is not a de Polignac number, because 28207215051 - 2¹¹ = 28207213003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28207215059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447370 + ... + 506511.

It is an arithmetic number, because the mean of its divisors is an integer number (4701684378).

Almost surely, 2^28207215051 is an apocalyptic number.

28207215051 is a deficient number, since it is larger than the sum of its proper divisors (9406259973).

28207215051 is an equidigital number, since it uses as much as digits as its factorization.

28207215051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963741.

The product of its (nonzero) digits is 11200, while the sum is 33.

The spelling of 28207215051 in words is "twenty-eight billion, two hundred seven million, two hundred fifteen thousand, fifty-one".