289445667028 has 24 divisors (see below), whose sum is σ = 579465118400. Its totient is φ = 123925189248.

The previous prime is 289445667013. The next prime is 289445667047. The reversal of 289445667028 is 820766544982.

It is a super-2 number, since 2×289445667028² (a number of 24 digits) contains 22 as substring.

It is a congruent 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, 5094318 + ... + 5150821.

Almost surely, 2^289445667028 is an apocalyptic number.

289445667028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

289445667028 is an abundant number, since it is smaller than the sum of its proper divisors (290019451372).

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

289445667028 is a wasteful number, since it uses less digits than its factorization.

289445667028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10246159 (or 10246157 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 61.

The spelling of 289445667028 in words is "two hundred eighty-nine billion, four hundred forty-five million, six hundred sixty-seven thousand, twenty-eight".