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32001424021 = 720963218081
BaseRepresentation
bin11101110011011011…
…101111101010010101
310001121020022202222201
4131303123233222111
51011014331032041
622411245324501
72212011421210
oct356333575225
9101536282881
1032001424021
1112631a73576
126251266731
13302cc1a678
141798194777
15c746bd631
hex7736efa95

32001424021 has 8 divisors (see below), whose sum is σ = 36574968384. Its totient is φ = 27428357760.

The previous prime is 32001424001. The next prime is 32001424033. The reversal of 32001424021 is 12042410023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 32001424021 - 25 = 32001423989 is a prime.

It is a super-3 number, since 3×320014240213 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 32001424021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32001424001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37701 + ... + 255781.

It is an arithmetic number, because the mean of its divisors is an integer number (4571871048).

Almost surely, 232001424021 is an apocalyptic number.

It is an amenable number.

32001424021 is a deficient number, since it is larger than the sum of its proper divisors (4573544363).

32001424021 is a wasteful number, since it uses less digits than its factorization.

32001424021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239051.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 32001424021 its reverse (12042410023), we get a palindrome (44043834044).

It can be divided in two parts, 320014 and 24021, that added together give a triangular number (344035 = T829).

The spelling of 32001424021 in words is "thirty-two billion, one million, four hundred twenty-four thousand, twenty-one".

Divisors: 1 7 20963 146741 218081 1526567 4571632003 32001424021