28663201950 has 24 divisors (see below), whose sum is σ = 71084741208. Its totient is φ = 7643520480.

The previous prime is 28663201937. The next prime is 28663202021. The reversal of 28663201950 is 5910236682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95543857 + ... + 95544156.

It is an arithmetic number, because the mean of its divisors is an integer number (2961864217).

Almost surely, 2^28663201950 is an apocalyptic number.

28663201950 is an abundant number, since it is smaller than the sum of its proper divisors (42421539258).

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

28663201950 is a wasteful number, since it uses less digits than its factorization.

28663201950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191088028 (or 191088023 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 28663201950 in words is "twenty-eight billion, six hundred sixty-three million, two hundred one thousand, nine hundred fifty".