289987692220 has 24 divisors (see below), whose sum is σ = 617316268464. Its totient is φ = 114406102656.

The previous prime is 289987692209. The next prime is 289987692221. The reversal of 289987692220 is 22296789982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289987692221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99309394 + ... + 99312313.

It is an arithmetic number, because the mean of its divisors is an integer number (25721511186).

Almost surely, 2^289987692220 is an apocalyptic number.

289987692220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289987692220 is an abundant number, since it is smaller than the sum of its proper divisors (327328576244).

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

289987692220 is a wasteful number, since it uses less digits than its factorization.

289987692220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198621789 (or 198621787 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 64.

The spelling of 289987692220 in words is "two hundred eighty-nine billion, nine hundred eighty-seven million, six hundred ninety-two thousand, two hundred twenty".