5621127840 has 120 divisors (see below), whose sum is σ = 19837942740. Its totient is φ = 1498963968.

The previous prime is 5621127833. The next prime is 5621127881. The reversal of 5621127840 is 487211265.

5621127840 is a `hidden beast` number, since 5 + 621 + 1 + 27 + 8 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5168459664 + 452668176 = 71892^2 + 21276^2 .

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a junction number, because it is equal to n+sod(n) for n = 5621127795 and 5621127804.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 203905 + ... + 229824.

Almost surely, 2^5621127840 is an apocalyptic number.

It is an amenable number.

5621127840 is an abundant number, since it is smaller than the sum of its proper divisors (14216814900).

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

5621127840 is a wasteful number, since it uses less digits than its factorization.

5621127840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433756 (or 433739 counting only the distinct ones).

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

The square root of 5621127840 is about 74974.1811559153. The cubic root of 5621127840 is about 1778.0384738294.

The spelling of 5621127840 in words is "five billion, six hundred twenty-one million, one hundred twenty-seven thousand, eight hundred forty".