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44020031 = 1131167773
BaseRepresentation
bin1010011111101…
…1000100111111
310001211110010112
42213323010333
542232120111
64211300235
71043110166
oct247730477
9101743115
1044020031
11229369a0
12128aa67b
139173573
145bbc3dd
153ce7e8b
hex29fb13f

44020031 has 16 divisors (see below), whose sum is σ = 49932288. Its totient is φ = 38445600.

The previous prime is 44019947. The next prime is 44020069. The reversal of 44020031 is 13002044.

It is a cyclic number.

It is not a de Polignac number, because 44020031 - 218 = 43757887 is a prime.

It is a super-2 number, since 2×440200312 = 3875526258481922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44019988 and 44020015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44020931) 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 15 ways as a sum of consecutive naturals, for example, 56561 + ... + 57333.

It is an arithmetic number, because the mean of its divisors is an integer number (3120768).

Almost surely, 244020031 is an apocalyptic number.

44020031 is a deficient number, since it is larger than the sum of its proper divisors (5912257).

44020031 is a wasteful number, since it uses less digits than its factorization.

44020031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 44020031 is about 6634.7593023410. The cubic root of 44020031 is about 353.0883984409.

Adding to 44020031 its reverse (13002044), we get a palindrome (57022075).

The spelling of 44020031 in words is "forty-four million, twenty thousand, thirty-one".

Divisors: 1 11 31 167 341 773 1837 5177 8503 23963 56947 129091 263593 1420001 4001821 44020031