1234400022 has 96 divisors (see below), whose sum is σ = 2957834880. Its totient is φ = 370298880.

The previous prime is 1234400021. The next prime is 1234400047. The reversal of 1234400022 is 2200044321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1234399968 and 1234400004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234400021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1002147 + ... + 1003377.

It is an arithmetic number, because the mean of its divisors is an integer number (30810780).

Almost surely, 2^1234400022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1234400022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1478917440).

1234400022 is an abundant number, since it is smaller than the sum of its proper divisors (1723434858).

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

1234400022 is a wasteful number, since it uses less digits than its factorization.

1234400022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398 (or 1395 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1234400022 is about 35134.0294017068. The cubic root of 1234400022 is about 1072.7173550052.

Adding to 1234400022 its reverse (2200044321), we get a palindrome (3434444343).

The spelling of 1234400022 in words is "one billion, two hundred thirty-four million, four hundred thousand, twenty-two".