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72230800 = 2452359503
BaseRepresentation
bin1000100111000…
…10011110010000
312000220201000211
410103202132100
5121442341200
611100053504
71534644265
oct423423620
9160821024
1072230800
1137855084
1220234294
1311c70025
14984326c
15651baba
hex44e2790

72230800 has 60 divisors (see below), whose sum is σ = 174363840. Its totient is φ = 28754560.

The previous prime is 72230791. The next prime is 72230801. The reversal of 72230800 is 803227.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72230801) 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 11 ways as a sum of consecutive naturals, for example, 143349 + ... + 143851.

It is an arithmetic number, because the mean of its divisors is an integer number (2906064).

Almost surely, 272230800 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 72230800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87181920).

72230800 is an abundant number, since it is smaller than the sum of its proper divisors (102133040).

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

72230800 is a wasteful number, since it uses less digits than its factorization.

72230800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 72230800 is about 8498.8705131917. The cubic root of 72230800 is about 416.4608120919.

The spelling of 72230800 in words is "seventy-two million, two hundred thirty thousand, eight hundred".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 80 100 200 359 400 503 718 1006 1436 1795 2012 2515 2872 3590 4024 5030 5744 7180 8048 8975 10060 12575 14360 17950 20120 25150 28720 35900 40240 50300 71800 100600 143600 180577 201200 361154 722308 902885 1444616 1805770 2889232 3611540 4514425 7223080 9028850 14446160 18057700 36115400 72230800