228142679 has 2 divisors, whose sum is σ = 228142680. Its totient is φ = 228142678.

The previous prime is 228142661. The next prime is 228142693. The reversal of 228142679 is 976241822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228142679 - 2²⁰ = 227094103 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228142639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114071339 + 114071340.

It is an arithmetic number, because the mean of its divisors is an integer number (114071340).

Almost surely, 2^228142679 is an apocalyptic number.

228142679 is a deficient number, since it is larger than the sum of its proper divisors (1).

228142679 is an equidigital number, since it uses as much as digits as its factorization.

228142679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 41.

The square root of 228142679 is about 15104.3927054351. The cubic root of 228142679 is about 611.0388809532.

The spelling of 228142679 in words is "two hundred twenty-eight million, one hundred forty-two thousand, six hundred seventy-nine".