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20221232 = 242354949
BaseRepresentation
bin100110100100…
…0110100110000
31102001100022112
41031020310300
520134034412
62001224452
7333610013
oct115106460
942040275
1020221232
1110461569
126932128
134260035
14298537a
151b96722
hex1348d30

20221232 has 20 divisors (see below), whose sum is σ = 40882800. Its totient is φ = 9670848.

The previous prime is 20221231. The next prime is 20221259. The reversal of 20221232 is 23212202.

It is not an unprimeable number, because it can be changed into a prime (20221231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27107 + ... + 27842.

It is an arithmetic number, because the mean of its divisors is an integer number (2044140).

Almost surely, 220221232 is an apocalyptic number.

It is an amenable number.

20221232 is an abundant number, since it is smaller than the sum of its proper divisors (20661568).

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

20221232 is a wasteful number, since it uses less digits than its factorization.

20221232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54980 (or 54974 counting only the distinct ones).

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

The square root of 20221232 is about 4496.8024194977. The cubic root of 20221232 is about 272.4389538645.

Adding to 20221232 its reverse (23212202), we get a palindrome (43433434).

The spelling of 20221232 in words is "twenty million, two hundred twenty-one thousand, two hundred thirty-two".

Divisors: 1 2 4 8 16 23 46 92 184 368 54949 109898 219796 439592 879184 1263827 2527654 5055308 10110616 20221232