28408042554 has 8 divisors (see below), whose sum is σ = 56816085120. Its totient is φ = 9469347516.

The previous prime is 28408042547. The next prime is 28408042571. The reversal of 28408042554 is 45524080482.

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

28408042554 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2367336874 + ... + 2367336885.

It is an arithmetic number, because the mean of its divisors is an integer number (7102010640).

Almost surely, 2^28408042554 is an apocalyptic number.

28408042554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28408042554 is a wasteful number, since it uses less digits than its factorization.

28408042554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4734673764.

The product of its (nonzero) digits is 409600, while the sum is 42.

The spelling of 28408042554 in words is "twenty-eight billion, four hundred eight million, forty-two thousand, five hundred fifty-four".