28442290698 has 16 divisors (see below), whose sum is σ = 63205090560. Its totient is φ = 9480763548.

The previous prime is 28442290637. The next prime is 28442290717. The reversal of 28442290698 is 89609224482.

28442290698 is a `hidden beast` number, since 28 + 442 + 2 + 90 + 6 + 98 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 526709087 = 28442290698 / (2 + 8 + 4 + 4 + 2 + 2 + 9 + 0 + 6 + 9 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263354490 + ... + 263354597.

It is an arithmetic number, because the mean of its divisors is an integer number (3950318160).

Almost surely, 2^28442290698 is an apocalyptic number.

28442290698 is an abundant number, since it is smaller than the sum of its proper divisors (34762799862).

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

28442290698 is a wasteful number, since it uses less digits than its factorization.

28442290698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526709098 (or 526709092 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 28442290698 in words is "twenty-eight billion, four hundred forty-two million, two hundred ninety thousand, six hundred ninety-eight".