1401424320 has 112 divisors (see below), whose sum is σ = 4457261088. Its totient is φ = 373063680.

The previous prime is 1401424303. The next prime is 1401424369. The reversal of 1401424320 is 234241041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 844932 + ... + 846588.

It is an arithmetic number, because the mean of its divisors is an integer number (39796974).

Almost surely, 2^1401424320 is an apocalyptic number.

1401424320 is a gapful number since it is divisible by the number (10) 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 1401424320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2228630544).

1401424320 is an abundant number, since it is smaller than the sum of its proper divisors (3055836768).

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

1401424320 is a wasteful number, since it uses less digits than its factorization.

1401424320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2558 (or 2548 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1401424320 is about 37435.6023058265. The cubic root of 1401424320 is about 1119.0681875550.

Adding to 1401424320 its reverse (234241041), we get a palindrome (1635665361).

The spelling of 1401424320 in words is "one billion, four hundred one million, four hundred twenty-four thousand, three hundred twenty".