2123444008 has 24 divisors (see below), whose sum is σ = 4631492250. Its totient is φ = 910047264.

The previous prime is 2123443999. The next prime is 2123444087. The reversal of 2123444008 is 8004443212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2003278564 + 120165444 = 44758^2 + 10962^2 .

It is a super-2 number, since 2×2123444008² = 9018028910222208128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2708083 + ... + 2708866.

Almost surely, 2^2123444008 is an apocalyptic number.

2123444008 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2123444008 is an abundant number, since it is smaller than the sum of its proper divisors (2508048242).

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

2123444008 is a wasteful number, since it uses less digits than its factorization.

2123444008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5416969 (or 5416958 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 2123444008 is about 46080.8420930000. The cubic root of 2123444008 is about 1285.3269231323.

The spelling of 2123444008 in words is "two billion, one hundred twenty-three million, four hundred forty-four thousand, eight".