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19428054 = 232326121
BaseRepresentation
bin100101000011…
…1001011010110
31100120001021120
41022013023112
514433144204
61532224410
7324064362
oct112071326
940501246
1019428054
11aa6a648
12660b106
134042cb9
14281a2a2
151a8b6d9
hex12872d6

19428054 has 24 divisors (see below), whose sum is σ = 40625592. Its totient is φ = 6193440.

The previous prime is 19428053. The next prime is 19428067. The reversal of 19428054 is 45082491.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19428053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114 + ... + 6234.

It is an arithmetic number, because the mean of its divisors is an integer number (1692733).

Almost surely, 219428054 is an apocalyptic number.

19428054 is an abundant number, since it is smaller than the sum of its proper divisors (21197538).

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

19428054 is a wasteful number, since it uses less digits than its factorization.

19428054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6172 (or 6149 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 19428054 is about 4407.7266249167. The cubic root of 19428054 is about 268.8291964903.

The spelling of 19428054 in words is "nineteen million, four hundred twenty-eight thousand, fifty-four".

Divisors: 1 2 3 6 23 46 69 138 529 1058 1587 3174 6121 12242 18363 36726 140783 281566 422349 844698 3238009 6476018 9714027 19428054