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22829680 = 2451372083
BaseRepresentation
bin101011100010…
…1101001110000
31120221212102201
41113011221300
521321022210
62133152544
7365022556
oct127055160
946855381
1022829680
1111983305
12778b754
1349643b3
143063bd6
15200e53a
hex15c5a70

22829680 has 40 divisors (see below), whose sum is σ = 53492112. Its totient is φ = 9060864.

The previous prime is 22829669. The next prime is 22829683. The reversal of 22829680 is 8692822.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22829683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9919 + ... + 12001.

Almost surely, 222829680 is an apocalyptic number.

22829680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22829680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26746056).

22829680 is an abundant number, since it is smaller than the sum of its proper divisors (30662432).

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

22829680 is a wasteful number, since it uses less digits than its factorization.

22829680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233 (or 2227 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 22829680 is about 4778.0414397533. The cubic root of 22829680 is about 283.6829762713.

The spelling of 22829680 in words is "twenty-two million, eight hundred twenty-nine thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 137 274 548 685 1096 1370 2083 2192 2740 4166 5480 8332 10415 10960 16664 20830 33328 41660 83320 166640 285371 570742 1141484 1426855 2282968 2853710 4565936 5707420 11414840 22829680