228166377 has 4 divisors (see below), whose sum is σ = 304221840. Its totient is φ = 152110916.

The previous prime is 228166361. The next prime is 228166397. The reversal of 228166377 is 773661822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 228166377 - 2⁴ = 228166361 is a prime.

It is a super-2 number, since 2×228166377² = 104119791186612258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228166357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38027727 + ... + 38027732.

It is an arithmetic number, because the mean of its divisors is an integer number (76055460).

Almost surely, 2^228166377 is an apocalyptic number.

It is an amenable number.

228166377 is a deficient number, since it is larger than the sum of its proper divisors (76055463).

228166377 is an equidigital number, since it uses as much as digits as its factorization.

228166377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76055462.

The product of its digits is 169344, while the sum is 42.

The square root of 228166377 is about 15105.1771588419. The cubic root of 228166377 is about 611.0600371555.

The spelling of 228166377 in words is "two hundred twenty-eight million, one hundred sixty-six thousand, three hundred seventy-seven".