1623722112 has 112 divisors (see below), whose sum is σ = 4850198430. Its totient is φ = 541209600.

The previous prime is 1623722069. The next prime is 1623722143. The reversal of 1623722112 is 2112273261.

1623722112 is a `hidden beast` number, since 1 + 623 + 7 + 2 + 21 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1332542016 + 291180096 = 36504^2 + 17064^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 84612 + ... + 102012.

Almost surely, 2^1623722112 is an apocalyptic number.

1623722112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1623722112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2425099215).

1623722112 is an abundant number, since it is smaller than the sum of its proper divisors (3226476318).

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

1623722112 is an frugal number, since it uses more digits than its factorization.

1623722112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17433 (or 17406 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 1623722112 is about 40295.4353742456. The cubic root of 1623722112 is about 1175.3590843361.

Adding to 1623722112 its reverse (2112273261), we get a palindrome (3735995373).

The spelling of 1623722112 in words is "one billion, six hundred twenty-three million, seven hundred twenty-two thousand, one hundred twelve".