1404022144 has 64 divisors (see below), whose sum is σ = 3208764960. Its totient is φ = 599445504.

The previous prime is 1404022141. The next prime is 1404022171. The reversal of 1404022144 is 4412204041.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1404022141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245364 + ... + 251020.

Almost surely, 2^1404022144 is an apocalyptic number.

1404022144 is a gapful number since it is divisible by the number (14) 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 1404022144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1604382480).

1404022144 is an abundant number, since it is smaller than the sum of its proper divisors (1804742816).

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

1404022144 is an equidigital number, since it uses as much as digits as its factorization.

1404022144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5955 (or 5943 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 1404022144 is about 37470.2834790451. The cubic root of 1404022144 is about 1119.7592339606.

Adding to 1404022144 its reverse (4412204041), we get a palindrome (5816226185).

The spelling of 1404022144 in words is "one billion, four hundred four million, twenty-two thousand, one hundred forty-four".