228423977 has 4 divisors (see below), whose sum is σ = 234597636. Its totient is φ = 222250320.

The previous prime is 228423961. The next prime is 228423983. The reversal of 228423977 is 779324822.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 168454441 + 59969536 = 12979^2 + 7744^2 .

It is a cyclic number.

It is not a de Polignac number, because 228423977 - 2⁴ = 228423961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228423077) 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, 3086774 + ... + 3086847.

It is an arithmetic number, because the mean of its divisors is an integer number (58649409).

Almost surely, 2^228423977 is an apocalyptic number.

It is an amenable number.

228423977 is a deficient number, since it is larger than the sum of its proper divisors (6173659).

228423977 is an equidigital number, since it uses as much as digits as its factorization.

228423977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6173658.

The product of its digits is 338688, while the sum is 44.

The square root of 228423977 is about 15113.7016313013. The cubic root of 228423977 is about 611.2899130710.

The spelling of 228423977 in words is "two hundred twenty-eight million, four hundred twenty-three thousand, nine hundred seventy-seven".