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52428450 = 23521931811
BaseRepresentation
bin1100011111111…
…1111010100010
310122122122022110
43013333322202
5101410202300
65111420150
71204430424
oct307777242
9118578273
1052428450
112765a2a8
1215684656
13ab28869
146d6a814
154909550
hex31ffea2

52428450 has 48 divisors (see below), whose sum is σ = 130768416. Its totient is φ = 13900800.

The previous prime is 52428419. The next prime is 52428451. The reversal of 52428450 is 5482425.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (52428451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28045 + ... + 29855.

It is an arithmetic number, because the mean of its divisors is an integer number (2724342).

Almost surely, 252428450 is an apocalyptic number.

52428450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 52428450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65384208).

52428450 is an abundant number, since it is smaller than the sum of its proper divisors (78339966).

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

52428450 is a wasteful number, since it uses less digits than its factorization.

52428450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019 (or 2014 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 52428450 is about 7240.7492706211. The cubic root of 52428450 is about 374.2734376393.

The spelling of 52428450 in words is "fifty-two million, four hundred twenty-eight thousand, four hundred fifty".

Divisors: 1 2 3 5 6 10 15 25 30 50 75 150 193 386 579 965 1158 1811 1930 2895 3622 4825 5433 5790 9055 9650 10866 14475 18110 27165 28950 45275 54330 90550 135825 271650 349523 699046 1048569 1747615 2097138 3495230 5242845 8738075 10485690 17476150 26214225 52428450