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20442141372 = 2236763251887
BaseRepresentation
bin10011000010011100…
…100101001010111100
31221202122111101012010
4103002130211022330
5313331142010442
613220242011220
71322401222542
oct230234451274
957678441163
1020442141372
118740068414
123b66046b10
131c0a182653
14dbccd9d92
157e99a5b9c
hex4c27252bc

20442141372 has 24 divisors (see below), whose sum is σ = 47705572096. Its totient is φ = 6813012528.

The previous prime is 20442141367. The next prime is 20442141373. The reversal of 20442141372 is 27314124402.

It is a super-2 number, since 2×204421413722 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20442141373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44788 + ... + 207099.

Almost surely, 220442141372 is an apocalyptic number.

It is an amenable number.

20442141372 is an abundant number, since it is smaller than the sum of its proper divisors (27263430724).

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

20442141372 is a wasteful number, since it uses less digits than its factorization.

20442141372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258657 (or 258655 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

Adding to 20442141372 its reverse (27314124402), we get a palindrome (47756265774).

The spelling of 20442141372 in words is "twenty billion, four hundred forty-two million, one hundred forty-one thousand, three hundred seventy-two".

Divisors: 1 2 3 4 6 12 6763 13526 20289 27052 40578 81156 251887 503774 755661 1007548 1511322 3022644 1703511781 3407023562 5110535343 6814047124 10221070686 20442141372