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20368452 = 22313592213
BaseRepresentation
bin100110110110…
…0110001000100
31102022211021010
41031230301010
520203242302
62004322220
7335062146
oct115546104
942284233
1020368452
1110552135
1269a3370
1342b2050
1429c2c96
151bc516c
hex136cc44

20368452 has 48 divisors (see below), whose sum is σ = 52073280. Its totient is φ = 6158208.

The previous prime is 20368441. The next prime is 20368459. The reversal of 20368452 is 25486302.

It is not an unprimeable number, because it can be changed into a prime (20368459) 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 15 ways as a sum of consecutive naturals, for example, 8098 + ... + 10310.

It is an arithmetic number, because the mean of its divisors is an integer number (1084860).

Almost surely, 220368452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20368452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26036640).

20368452 is an abundant number, since it is smaller than the sum of its proper divisors (31704828).

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

20368452 is a wasteful number, since it uses less digits than its factorization.

20368452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292 (or 2290 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 20368452 is about 4513.1421426762. The cubic root of 20368452 is about 273.0985166857.

The spelling of 20368452 in words is "twenty million, three hundred sixty-eight thousand, four hundred fifty-two".

Divisors: 1 2 3 4 6 12 13 26 39 52 59 78 118 156 177 236 354 708 767 1534 2213 2301 3068 4426 4602 6639 8852 9204 13278 26556 28769 57538 86307 115076 130567 172614 261134 345228 391701 522268 783402 1566804 1697371 3394742 5092113 6789484 10184226 20368452