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44431013020 = 22510121995551
BaseRepresentation
bin101001011000010010…
…110111010010011100
311020200110210022122211
4221120102313102130
51211443314404040
632224502450204
73132020244052
oct513022672234
9136613708584
1044431013020
111793016a779
12873ba33964
134261083664
142216c7a1d2
1512509e98ea
hexa584b749c

44431013020 has 24 divisors (see below), whose sum is σ = 94228944768. Its totient is φ = 17596440000.

The previous prime is 44431012999. The next prime is 44431013027. The reversal of 44431013020 is 2031013444.

It is a super-2 number, since 2×444310130202 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 44431012982 and 44431013000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44431013027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10995756 + ... + 10999795.

It is an arithmetic number, because the mean of its divisors is an integer number (3926206032).

Almost surely, 244431013020 is an apocalyptic number.

It is an amenable number.

44431013020 is an abundant number, since it is smaller than the sum of its proper divisors (49797931748).

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

44431013020 is a wasteful number, since it uses less digits than its factorization.

44431013020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21995661 (or 21995659 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 44431013020 its reverse (2031013444), we get a palindrome (46462026464).

The spelling of 44431013020 in words is "forty-four billion, four hundred thirty-one million, thirteen thousand, twenty".

Divisors: 1 2 4 5 10 20 101 202 404 505 1010 2020 21995551 43991102 87982204 109977755 219955510 439911020 2221550651 4443101302 8886202604 11107753255 22215506510 44431013020