28914434650 has 24 divisors (see below), whose sum is σ = 56611421280. Its totient is φ = 10957048560.

The previous prime is 28914434629. The next prime is 28914434651. The reversal of 28914434650 is 5643441982.

It is a super-2 number, since 2×28914434650² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28914434650.

It is not an unprimeable number, because it can be changed into a prime (28914434651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15217174 + ... + 15219073.

It is an arithmetic number, because the mean of its divisors is an integer number (2358809220).

Almost surely, 2^28914434650 is an apocalyptic number.

28914434650 is a deficient number, since it is larger than the sum of its proper divisors (27696986630).

28914434650 is a wasteful number, since it uses less digits than its factorization.

28914434650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30436278 (or 30436273 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 28914434650 in words is "twenty-eight billion, nine hundred fourteen million, four hundred thirty-four thousand, six hundred fifty".