28950331 has 2 divisors, whose sum is σ = 28950332. Its totient is φ = 28950330.

The previous prime is 28950301. The next prime is 28950343. The reversal of 28950331 is 13305982.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28950331 - 2⁷ = 28950203 is a prime.

It is a super-2 number, since 2×28950331² = 1676243330019122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28950293 and 28950302.

It is not a weakly prime, because it can be changed into another prime (28950301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14475165 + 14475166.

It is an arithmetic number, because the mean of its divisors is an integer number (14475166).

Almost surely, 2^28950331 is an apocalyptic number.

28950331 is a deficient number, since it is larger than the sum of its proper divisors (1).

28950331 is an equidigital number, since it uses as much as digits as its factorization.

28950331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 28950331 is about 5380.5511799443. The cubic root of 28950331 is about 307.0561812958.

The spelling of 28950331 in words is "twenty-eight million, nine hundred fifty thousand, three hundred thirty-one".