1223467890 has 16 divisors (see below), whose sum is σ = 2936323008. Its totient is φ = 326258096.

The previous prime is 1223467877. The next prime is 1223467933. The reversal of 1223467890 is 987643221.

It is a super-2 number, since 2×1223467890² = 2993747355722104200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20391102 + ... + 20391161.

It is an arithmetic number, because the mean of its divisors is an integer number (183520188).

Almost surely, 2^1223467890 is an apocalyptic number.

1223467890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1223467890 is an abundant number, since it is smaller than the sum of its proper divisors (1712855118).

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

1223467890 is a wasteful number, since it uses less digits than its factorization.

1223467890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40782273.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 1223467890 is about 34978.1058663845. The cubic root of 1223467890 is about 1069.5412159568.

The spelling of 1223467890 in words is "one billion, two hundred twenty-three million, four hundred sixty-seven thousand, eight hundred ninety".