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72230071580 = 22517212441387
BaseRepresentation
bin100001101000100111…
…1110110110100011100
320220102211121210222022
41003101033312310130
52140411344242310
653103153035312
75134633323032
oct1032117666434
9226384553868
1072230071580
11286a5aa0937
1211bb9855b38
136a71477734
1436d2c80552
151d2b2bca55
hex10d13f6d1c

72230071580 has 24 divisors (see below), whose sum is σ = 160605689328. Its totient is φ = 27192497408.

The previous prime is 72230071553. The next prime is 72230071591. The reversal of 72230071580 is 8517003227.

It is a self number, because there is not a number n which added to its sum of digits gives 72230071580.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106220354 + ... + 106221033.

It is an arithmetic number, because the mean of its divisors is an integer number (6691903722).

Almost surely, 272230071580 is an apocalyptic number.

It is an amenable number.

72230071580 is an abundant number, since it is smaller than the sum of its proper divisors (88375617748).

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

72230071580 is a wasteful number, since it uses less digits than its factorization.

72230071580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212441413 (or 212441411 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The spelling of 72230071580 in words is "seventy-two billion, two hundred thirty million, seventy-one thousand, five hundred eighty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 212441387 424882774 849765548 1062206935 2124413870 3611503579 4248827740 7223007158 14446014316 18057517895 36115035790 72230071580