298968021 has 24 divisors (see below), whose sum is σ = 495899040. Its totient is φ = 171655200.

The previous prime is 298967969. The next prime is 298968037. The reversal of 298968021 is 120869892.

It is not a de Polignac number, because 298968021 - 2¹⁵ = 298935253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298968041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77590 + ... + 81351.

It is an arithmetic number, because the mean of its divisors is an integer number (20662460).

Almost surely, 2^298968021 is an apocalyptic number.

It is an amenable number.

298968021 is a deficient number, since it is larger than the sum of its proper divisors (196931019).

298968021 is a wasteful number, since it uses less digits than its factorization.

298968021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158977 (or 158974 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 298968021 is about 17290.6917444040. The cubic root of 298968021 is about 668.6644674025.

The spelling of 298968021 in words is "two hundred ninety-eight million, nine hundred sixty-eight thousand, twenty-one".