28663764302 has 4 divisors (see below), whose sum is σ = 42995646456. Its totient is φ = 14331882150.

The previous prime is 28663764289. The next prime is 28663764307. The reversal of 28663764302 is 20346736682.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×28663764302² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28663764307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7165941074 + ... + 7165941077.

It is an arithmetic number, because the mean of its divisors is an integer number (10748911614).

Almost surely, 2^28663764302 is an apocalyptic number.

28663764302 is a deficient number, since it is larger than the sum of its proper divisors (14331882154).

28663764302 is a wasteful number, since it uses less digits than its factorization.

28663764302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14331882153.

The product of its (nonzero) digits is 1741824, while the sum is 47.

The spelling of 28663764302 in words is "twenty-eight billion, six hundred sixty-three million, seven hundred sixty-four thousand, three hundred two".