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19002072 = 2333072579
BaseRepresentation
bin100100001111…
…1001011011000
31022202101221110
41020133023120
514331031242
61515140320
7320341425
oct110371330
938671843
1019002072
11a7a95a1
1264446a0
133c2413b
142748d4c
151a0539c
hex121f2d8

19002072 has 32 divisors (see below), whose sum is σ = 47678400. Its totient is φ = 6310944.

The previous prime is 19002059. The next prime is 19002083. The reversal of 19002072 is 27020091.

It is a happy number.

It is a super-2 number, since 2×190020722 = 722157480586368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6079 + ... + 8657.

It is an arithmetic number, because the mean of its divisors is an integer number (1489950).

Almost surely, 219002072 is an apocalyptic number.

19002072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19002072 is an abundant number, since it is smaller than the sum of its proper divisors (28676328).

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

19002072 is a wasteful number, since it uses less digits than its factorization.

19002072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2895 (or 2891 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 19002072 is about 4359.1366117616. The cubic root of 19002072 is about 266.8498643937.

The spelling of 19002072 in words is "nineteen million, two thousand, seventy-two".

Divisors: 1 2 3 4 6 8 12 24 307 614 921 1228 1842 2456 2579 3684 5158 7368 7737 10316 15474 20632 30948 61896 791753 1583506 2375259 3167012 4750518 6334024 9501036 19002072