28790070288 has 40 divisors (see below), whose sum is σ = 84999256128. Its totient is φ = 8225734272.

The previous prime is 28790070277. The next prime is 28790070293. The reversal of 28790070288 is 88207009782.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28790070288.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42842031 + ... + 42842702.

Almost surely, 2^28790070288 is an apocalyptic number.

28790070288 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28790070288 is an abundant number, since it is smaller than the sum of its proper divisors (56209185840).

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

28790070288 is a wasteful number, since it uses less digits than its factorization.

28790070288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85684751 (or 85684745 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 51.

The spelling of 28790070288 in words is "twenty-eight billion, seven hundred ninety million, seventy thousand, two hundred eighty-eight".