28703666368 has 28 divisors (see below), whose sum is σ = 61340288800. Its totient is φ = 13247845632.

The previous prime is 28703666363. The next prime is 28703666423. The reversal of 28703666368 is 86366630782.

It is a super-2 number, since 2×28703666368² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28703666363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17248968 + ... + 17250631.

It is an arithmetic number, because the mean of its divisors is an integer number (2190724600).

Almost surely, 2^28703666368 is an apocalyptic number.

It is an amenable number.

28703666368 is an abundant number, since it is smaller than the sum of its proper divisors (32636622432).

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

28703666368 is a wasteful number, since it uses less digits than its factorization.

28703666368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34499624 (or 34499614 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 55.

The spelling of 28703666368 in words is "twenty-eight billion, seven hundred three million, six hundred sixty-six thousand, three hundred sixty-eight".