228940087 has 2 divisors, whose sum is σ = 228940088. Its totient is φ = 228940086.

The previous prime is 228940027. The next prime is 228940093. The reversal of 228940087 is 780049822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228940087 - 2⁷ = 228939959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228940027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114470043 + 114470044.

It is an arithmetic number, because the mean of its divisors is an integer number (114470044).

Almost surely, 2^228940087 is an apocalyptic number.

228940087 is a deficient number, since it is larger than the sum of its proper divisors (1).

228940087 is an equidigital number, since it uses as much as digits as its factorization.

228940087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 228940087 is about 15130.7662396853. The cubic root of 228940087 is about 611.7499574831.

The spelling of 228940087 in words is "two hundred twenty-eight million, nine hundred forty thousand, eighty-seven".