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19428052 = 227693859
BaseRepresentation
bin100101000011…
…1001011010100
31100120001021111
41022013023110
514433144202
61532224404
7324064360
oct112071324
940501244
1019428052
11aa6a646
12660b104
134042cb7
14281a2a0
151a8b6d7
hex12872d4

19428052 has 12 divisors (see below), whose sum is σ = 38856160. Its totient is φ = 8326296.

The previous prime is 19428047. The next prime is 19428053. The reversal of 19428052 is 25082491.

19428052 is an admirable 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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346902 + ... + 346957.

Almost surely, 219428052 is an apocalyptic number.

It is an amenable number.

19428052 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19428052 is a wasteful number, since it uses less digits than its factorization.

19428052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693870 (or 693868 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 19428052 is about 4407.7263980424. The cubic root of 19428052 is about 268.8291872655.

The spelling of 19428052 in words is "nineteen million, four hundred twenty-eight thousand, fifty-two".

Divisors: 1 2 4 7 14 28 693859 1387718 2775436 4857013 9714026 19428052