289021947900 has 432 divisors, whose sum is σ = 1000670702976. Its totient is φ = 64191429120.

The previous prime is 289021947829. The next prime is 289021947919. The reversal of 289021947900 is 9749120982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 83361967 + ... + 83365433.

It is an arithmetic number, because the mean of its divisors is an integer number (2316367368).

Almost surely, 2^289021947900 is an apocalyptic number.

289021947900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 289021947900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (500335351488).

289021947900 is an abundant number, since it is smaller than the sum of its proper divisors (711648755076).

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

289021947900 is a wasteful number, since it uses less digits than its factorization.

289021947900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3658 (or 3644 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 51.

The spelling of 289021947900 in words is "two hundred eighty-nine billion, twenty-one million, nine hundred forty-seven thousand, nine hundred".