28215365950 has 12 divisors (see below), whose sum is σ = 52480580760. Its totient is φ = 11286146360.

The previous prime is 28215365933. The next prime is 28215365977. The reversal of 28215365950 is 5956351282.

It is a super-2 number, since 2×28215365950² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28215365950.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 282153610 + ... + 282153709.

It is an arithmetic number, because the mean of its divisors is an integer number (4373381730).

Almost surely, 2^28215365950 is an apocalyptic number.

28215365950 is a deficient number, since it is larger than the sum of its proper divisors (24265214810).

28215365950 is a wasteful number, since it uses less digits than its factorization.

28215365950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564307331 (or 564307326 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 28215365950 in words is "twenty-eight billion, two hundred fifteen million, three hundred sixty-five thousand, nine hundred fifty".