28894200081554 has 8 divisors (see below), whose sum is σ = 43350618841968. Its totient is φ = 14443993800900.

The previous prime is 28894200081427. The next prime is 28894200081599. The reversal of 28894200081554 is 45518000249882.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28894200081554.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1553108312 + ... + 1553126915.

It is an arithmetic number, because the mean of its divisors is an integer number (5418827355246).

Almost surely, 2^{28894200081554} is an apocalyptic number.

28894200081554 is a deficient number, since it is larger than the sum of its proper divisors (14456418760414).

28894200081554 is a wasteful number, since it uses less digits than its factorization.

28894200081554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106239880.

The product of its (nonzero) digits is 7372800, while the sum is 56.

The spelling of 28894200081554 in words is "twenty-eight trillion, eight hundred ninety-four billion, two hundred million, eighty-one thousand, five hundred fifty-four".