298628831 has 4 divisors (see below), whose sum is σ = 298698312. Its totient is φ = 298559352.

The previous prime is 298628819. The next prime is 298628857. The reversal of 298628831 is 138826892.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-298628831 is a prime.

It is a super-2 number, since 2×298628831² = 178358357408853122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298628861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27836 + ... + 37041.

It is an arithmetic number, because the mean of its divisors is an integer number (74674578).

Almost surely, 2^298628831 is an apocalyptic number.

298628831 is a deficient number, since it is larger than the sum of its proper divisors (69481).

298628831 is an equidigital number, since it uses as much as digits as its factorization.

298628831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69480.

The product of its digits is 331776, while the sum is 47.

The square root of 298628831 is about 17280.8805041873. The cubic root of 298628831 is about 668.4114970608.

The spelling of 298628831 in words is "two hundred ninety-eight million, six hundred twenty-eight thousand, eight hundred thirty-one".