1401874056 has 144 divisors (see below), whose sum is σ = 4287055500. Its totient is φ = 413233920.

The previous prime is 1401874021. The next prime is 1401874063. The reversal of 1401874056 is 6504781041.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1390544100 + 11329956 = 37290^2 + 3366^2 .

It is a super-2 number, since 2×1401874056² = 3930501737771782272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1401874056.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 320170 + ... + 324518.

Almost surely, 2^1401874056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1401874056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2143527750).

1401874056 is an abundant number, since it is smaller than the sum of its proper divisors (2885181444).

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

1401874056 is a wasteful number, since it uses less digits than its factorization.

1401874056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4420 (or 4402 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1401874056 is about 37441.6086192888. The cubic root of 1401874056 is about 1119.1878827860.

The spelling of 1401874056 in words is "one billion, four hundred one million, eight hundred seventy-four thousand, fifty-six".