228540007 has 2 divisors, whose sum is σ = 228540008. Its totient is φ = 228540006.

The previous prime is 228539957. The next prime is 228540019. The reversal of 228540007 is 700045822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228540007 - 2¹⁵ = 228507239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228541007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114270003 + 114270004.

It is an arithmetic number, because the mean of its divisors is an integer number (114270004).

Almost surely, 2^228540007 is an apocalyptic number.

228540007 is a deficient number, since it is larger than the sum of its proper divisors (1).

228540007 is an equidigital number, since it uses as much as digits as its factorization.

228540007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 228540007 is about 15117.5397138556. The cubic root of 228540007 is about 611.3933989418.

Adding to 228540007 its reverse (700045822), we get a palindrome (928585829).

The spelling of 228540007 in words is "two hundred twenty-eight million, five hundred forty thousand, seven".