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32020031142 = 23211161717329
BaseRepresentation
bin11101110100100010…
…101110011010100110
310001122112100010011100
4131310202232122212
51011034111444032
622413152220530
72212325526321
oct356442563246
9101575303140
1032020031142
1112641522360
12625753a746
133033a33ab8
14179a8397b8
15c7614697c
hex7748ae6a6

32020031142 has 24 divisors (see below), whose sum is σ = 75683710440. Its totient is φ = 9703039680.

The previous prime is 32020031051. The next prime is 32020031149. The reversal of 32020031142 is 24113002023.

32020031142 is a `hidden beast` number, since 320 + 200 + 3 + 1 + 142 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32020031149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80858467 + ... + 80858862.

It is an arithmetic number, because the mean of its divisors is an integer number (3153487935).

Almost surely, 232020031142 is an apocalyptic number.

32020031142 is an abundant number, since it is smaller than the sum of its proper divisors (43663679298).

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

32020031142 is a wasteful number, since it uses less digits than its factorization.

32020031142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161717348 (or 161717345 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 32020031142 its reverse (24113002023), we get a palindrome (56133033165).

The spelling of 32020031142 in words is "thirty-two billion, twenty million, thirty-one thousand, one hundred forty-two".

Divisors: 1 2 3 6 9 11 18 22 33 66 99 198 161717329 323434658 485151987 970303974 1455455961 1778890619 2910911922 3557781238 5336671857 10673343714 16010015571 32020031142