28901588871890 has 16 divisors (see below), whose sum is σ = 59454697108032. Its totient is φ = 9909116184624.

The previous prime is 28901588871811. The next prime is 28901588871917. The reversal of 28901588871890 is 9817888510982.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206439920444 + ... + 206439920583.

It is an arithmetic number, because the mean of its divisors is an integer number (3715918569252).

Almost surely, 2^{28901588871890} is an apocalyptic number.

28901588871890 is an abundant number, since it is smaller than the sum of its proper divisors (30553108236142).

28901588871890 is a wasteful number, since it uses less digits than its factorization.

28901588871890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412879841041.

The product of its (nonzero) digits is 185794560, while the sum is 74.

The spelling of 28901588871890 in words is "twenty-eight trillion, nine hundred one billion, five hundred eighty-eight million, eight hundred seventy-one thousand, eight hundred ninety".