28508714454 has 32 divisors (see below), whose sum is σ = 62226042624. Its totient is φ = 8635502880.

The previous prime is 28508714449. The next prime is 28508714477. The reversal of 28508714454 is 45441780582.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 78912 + ... + 251484.

It is an arithmetic number, because the mean of its divisors is an integer number (1944563832).

Almost surely, 2^28508714454 is an apocalyptic number.

28508714454 is an abundant number, since it is smaller than the sum of its proper divisors (33717328170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28508714454 is a wasteful number, since it uses less digits than its factorization.

28508714454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175092.

The product of its (nonzero) digits is 1433600, while the sum is 48.

The spelling of 28508714454 in words is "twenty-eight billion, five hundred eight million, seven hundred fourteen thousand, four hundred fifty-four".