28818802650 has 48 divisors (see below), whose sum is σ = 77967965088. Its totient is φ = 6986376000.

The previous prime is 28818802631. The next prime is 28818802651. The reversal of 28818802650 is 5620881882.

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 28818802650.

It is not an unprimeable number, because it can be changed into a prime (28818802651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8731321 + ... + 8734620.

It is an arithmetic number, because the mean of its divisors is an integer number (1624332606).

Almost surely, 2^28818802650 is an apocalyptic number.

28818802650 is an abundant number, since it is smaller than the sum of its proper divisors (49149162438).

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

28818802650 is a wasteful number, since it uses less digits than its factorization.

28818802650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17465967 (or 17465962 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 48.

The spelling of 28818802650 in words is "twenty-eight billion, eight hundred eighteen million, eight hundred two thousand, six hundred fifty".