28957898650 has 48 divisors (see below), whose sum is σ = 55176468480. Its totient is φ = 11303409600.

The previous prime is 28957898621. The next prime is 28957898741. The reversal of 28957898650 is 5689875982.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 349971 + ... + 424729.

It is an arithmetic number, because the mean of its divisors is an integer number (1149509760).

Almost surely, 2^28957898650 is an apocalyptic number.

28957898650 is a deficient number, since it is larger than the sum of its proper divisors (26218569830).

28957898650 is a wasteful number, since it uses less digits than its factorization.

28957898650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74959 (or 74954 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 67.

The spelling of 28957898650 in words is "twenty-eight billion, nine hundred fifty-seven million, eight hundred ninety-eight thousand, six hundred fifty".