1228633267 has 4 divisors (see below), whose sum is σ = 1235497320. Its totient is φ = 1221769216.

The previous prime is 1228633253. The next prime is 1228633277. The reversal of 1228633267 is 7623368221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1228633267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1228633207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3431758 + ... + 3432115.

It is an arithmetic number, because the mean of its divisors is an integer number (308874330).

Almost surely, 2^1228633267 is an apocalyptic number.

1228633267 is a deficient number, since it is larger than the sum of its proper divisors (6864053).

1228633267 is an equidigital number, since it uses as much as digits as its factorization.

1228633267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6864052.

The product of its digits is 145152, while the sum is 40.

The square root of 1228633267 is about 35051.8653854542. The cubic root of 1228633267 is about 1071.0442732509.

The spelling of 1228633267 in words is "one billion, two hundred twenty-eight million, six hundred thirty-three thousand, two hundred sixty-seven".