28298899 has 2 divisors, whose sum is σ = 28298900. Its totient is φ = 28298898.

The previous prime is 28298869. The next prime is 28298909. The reversal of 28298899 is 99889282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28298899 - 2¹³ = 28290707 is a prime.

It is a super-2 number, since 2×28298899² = 1601655369224402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28298869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14149449 + 14149450.

It is an arithmetic number, because the mean of its divisors is an integer number (14149450).

Almost surely, 2^28298899 is an apocalyptic number.

28298899 is a deficient number, since it is larger than the sum of its proper divisors (1).

28298899 is an equidigital number, since it uses as much as digits as its factorization.

28298899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 55.

The square root of 28298899 is about 5319.6709484704. The cubic root of 28298899 is about 304.7355909662.

The spelling of 28298899 in words is "twenty-eight million, two hundred ninety-eight thousand, eight hundred ninety-nine".