298040656 has 40 divisors (see below), whose sum is σ = 606345120. Its totient is φ = 141719424.

The previous prime is 298040641. The next prime is 298040657. The reversal of 298040656 is 656040892.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298040657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26295 + ... + 35881.

It is an arithmetic number, because the mean of its divisors is an integer number (15158628).

Almost surely, 2^298040656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 298040656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303172560).

298040656 is an abundant number, since it is smaller than the sum of its proper divisors (308304464).

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

298040656 is a wasteful number, since it uses less digits than its factorization.

298040656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9691 (or 9685 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 298040656 is about 17263.8540308936. The cubic root of 298040656 is about 667.9723774539.

The spelling of 298040656 in words is "two hundred ninety-eight million, forty thousand, six hundred fifty-six".