1401324220 has 48 divisors (see below), whose sum is σ = 3088653120. Its totient is φ = 533029376.

The previous prime is 1401324193. The next prime is 1401324241. The reversal of 1401324220 is 224231041.

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, 70776 + ... + 88384.

It is an arithmetic number, because the mean of its divisors is an integer number (64346940).

Almost surely, 2^1401324220 is an apocalyptic number.

1401324220 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 1401324220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1544326560).

1401324220 is an abundant number, since it is smaller than the sum of its proper divisors (1687328900).

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

1401324220 is a wasteful number, since it uses less digits than its factorization.

1401324220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17814 (or 17812 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1401324220 is about 37434.2653193568. The cubic root of 1401324220 is about 1119.0415429023.

Adding to 1401324220 its reverse (224231041), we get a palindrome (1625555261).

The spelling of 1401324220 in words is "one billion, four hundred one million, three hundred twenty-four thousand, two hundred twenty".