1401180840 has 192 divisors, whose sum is σ = 4834252800. Its totient is φ = 350977536.

The previous prime is 1401180829. The next prime is 1401180857. The reversal of 1401180840 is 480811041.

1401180840 is a `hidden beast` number, since 1 + 401 + 180 + 84 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 867874 + ... + 869486.

It is an arithmetic number, because the mean of its divisors is an integer number (25178400).

Almost surely, 2^1401180840 is an apocalyptic number.

1401180840 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 1401180840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2417126400).

1401180840 is an abundant number, since it is smaller than the sum of its proper divisors (3433071960).

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

1401180840 is a wasteful number, since it uses less digits than its factorization.

1401180840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776 (or 1769 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 1401180840 is about 37432.3501800248. The cubic root of 1401180840 is about 1119.0033757538.

Adding to 1401180840 its reverse (480811041), we get a palindrome (1881991881).

The spelling of 1401180840 in words is "one billion, four hundred one million, one hundred eighty thousand, eight hundred forty".