1228235967 has 56 divisors (see below), whose sum is σ = 2115663264. Its totient is φ = 698160384.

The previous prime is 1228235959. The next prime is 1228235969. The reversal of 1228235967 is 7695328221.

1228235967 is a `hidden beast` number, since 12 + 28 + 23 + 596 + 7 = 666.

It is not a de Polignac number, because 1228235967 - 2³ = 1228235959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228235969) 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 55 ways as a sum of consecutive naturals, for example, 1188483 + ... + 1189515.

Almost surely, 2^1228235967 is an apocalyptic number.

1228235967 is a deficient number, since it is larger than the sum of its proper divisors (887427297).

1228235967 is an equidigital number, since it uses as much as digits as its factorization.

1228235967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291 (or 1276 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 1228235967 is about 35046.1976111532. The cubic root of 1228235967 is about 1070.9288138548.

The spelling of 1228235967 in words is "one billion, two hundred twenty-eight million, two hundred thirty-five thousand, nine hundred sixty-seven".