289772056 has 16 divisors (see below), whose sum is σ = 620940240. Its totient is φ = 124188000.

The previous prime is 289772029. The next prime is 289772107. The reversal of 289772056 is 650277982.

It is a junction number, because it is equal to n+sod(n) for n = 289771997 and 289772015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2587195 + ... + 2587306.

It is an arithmetic number, because the mean of its divisors is an integer number (38808765).

Almost surely, 2^289772056 is an apocalyptic number.

It is an amenable number.

289772056 is an abundant number, since it is smaller than the sum of its proper divisors (331168184).

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

289772056 is a wasteful number, since it uses less digits than its factorization.

289772056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5174514 (or 5174510 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 289772056 is about 17022.6923839914. The cubic root of 289772056 is about 661.7371257259.

The spelling of 289772056 in words is "two hundred eighty-nine million, seven hundred seventy-two thousand, fifty-six".