28928499551 has 8 divisors (see below), whose sum is σ = 33062292480. Its totient is φ = 24794994168.

The previous prime is 28928499541. The next prime is 28928499553. The reversal of 28928499551 is 15599482982.

It is a happy number.

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

It is not a de Polignac number, because 28928499551 - 2²⁶ = 28861390687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28928499553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226010 + ... + 330056.

It is an arithmetic number, because the mean of its divisors is an integer number (4132786560).

Almost surely, 2^28928499551 is an apocalyptic number.

28928499551 is a deficient number, since it is larger than the sum of its proper divisors (4133792929).

28928499551 is a wasteful number, since it uses less digits than its factorization.

28928499551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143773.

The product of its digits is 18662400, while the sum is 62.

The spelling of 28928499551 in words is "twenty-eight billion, nine hundred twenty-eight million, four hundred ninety-nine thousand, five hundred fifty-one".