289722996 has 36 divisors (see below), whose sum is σ = 764199072. Its totient is φ = 92375184.

The previous prime is 289722991. The next prime is 289723003. The reversal of 289722996 is 699227982.

It is a happy number.

289722996 is a `hidden beast` number, since 289 + 72 + 299 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×289722996² = 167878828822432032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289722991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174126 + ... + 175781.

It is an arithmetic number, because the mean of its divisors is an integer number (21227752).

Almost surely, 2^289722996 is an apocalyptic number.

It is an amenable number.

289722996 is an abundant number, since it is smaller than the sum of its proper divisors (474476076).

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

289722996 is a wasteful number, since it uses less digits than its factorization.

289722996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349940 (or 349935 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 289722996 is about 17021.2513053536. The cubic root of 289722996 is about 661.6997783753.

The spelling of 289722996 in words is "two hundred eighty-nine million, seven hundred twenty-two thousand, nine hundred ninety-six".