28288770478 has 8 divisors (see below), whose sum is σ = 42443127000. Its totient is φ = 14141061480.

The previous prime is 28288770421. The next prime is 28288770481. The reversal of 28288770478 is 87407788282.

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

It is a congruent 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, 1651228 + ... + 1668271.

It is an arithmetic number, because the mean of its divisors is an integer number (5305390875).

Almost surely, 2^28288770478 is an apocalyptic number.

28288770478 is a deficient number, since it is larger than the sum of its proper divisors (14154356522).

28288770478 is a wasteful number, since it uses less digits than its factorization.

28288770478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3323762.

The product of its (nonzero) digits is 22478848, while the sum is 61.

The spelling of 28288770478 in words is "twenty-eight billion, two hundred eighty-eight million, seven hundred seventy thousand, four hundred seventy-eight".