228372499 has 2 divisors, whose sum is σ = 228372500. Its totient is φ = 228372498.

The previous prime is 228372479. The next prime is 228372553. The reversal of 228372499 is 994273822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228372499 - 2⁵ = 228372467 is a prime.

It is not a weakly prime, because it can be changed into another prime (228372409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114186249 + 114186250.

It is an arithmetic number, because the mean of its divisors is an integer number (114186250).

Almost surely, 2^228372499 is an apocalyptic number.

228372499 is a deficient number, since it is larger than the sum of its proper divisors (1).

228372499 is an equidigital number, since it uses as much as digits as its factorization.

228372499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 46.

The square root of 228372499 is about 15111.9985111169. The cubic root of 228372499 is about 611.2439891904.

The spelling of 228372499 in words is "two hundred twenty-eight million, three hundred seventy-two thousand, four hundred ninety-nine".