1223002278 has 24 divisors (see below), whose sum is σ = 2652358800. Its totient is φ = 407279664.

The previous prime is 1223002273. The next prime is 1223002283. The reversal of 1223002278 is 8722003221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1223002273) and next prime (1223002283).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223002271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12538 + ... + 51021.

It is an arithmetic number, because the mean of its divisors is an integer number (110514950).

Almost surely, 2^1223002278 is an apocalyptic number.

1223002278 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1223002278 is an abundant number, since it is smaller than the sum of its proper divisors (1429356522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223002278 is a wasteful number, since it uses less digits than its factorization.

1223002278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64636 (or 64633 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 1223002278 is about 34971.4494695316. The cubic root of 1223002278 is about 1069.4055212333.

Adding to 1223002278 its reverse (8722003221), we get a palindrome (9945005499).

The spelling of 1223002278 in words is "one billion, two hundred twenty-three million, two thousand, two hundred seventy-eight".