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20202441 = 3723151277
BaseRepresentation
bin100110100010…
…0001111001001
31102000101112120
41031010033021
520132434231
62001001453
7333501150
oct115041711
942011476
1020202441
1110449436
126923289
13425460c
14297c597
151b90d96
hex13443c9

20202441 has 32 divisors (see below), whose sum is σ = 32452608. Its totient is φ = 10929600.

The previous prime is 20202439. The next prime is 20202451. The reversal of 20202441 is 14420202.

It is not a de Polignac number, because 20202441 - 21 = 20202439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20202441.

It is not an unprimeable number, because it can be changed into a prime (20202451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72795 + ... + 73071.

It is an arithmetic number, because the mean of its divisors is an integer number (1014144).

Almost surely, 220202441 is an apocalyptic number.

20202441 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20202441 is a deficient number, since it is larger than the sum of its proper divisors (12250167).

20202441 is a wasteful number, since it uses less digits than its factorization.

20202441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 20202441 is about 4494.7125603313. The cubic root of 20202441 is about 272.3545378578.

Adding to 20202441 its reverse (14420202), we get a palindrome (34622643).

The spelling of 20202441 in words is "twenty million, two hundred two thousand, four hundred forty-one".

Divisors: 1 3 7 21 23 69 151 161 277 453 483 831 1057 1939 3171 3473 5817 6371 10419 19113 24311 41827 44597 72933 125481 133791 292789 878367 962021 2886063 6734147 20202441