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19042572 = 2231586881
BaseRepresentation
bin100100010100…
…1000100001100
31022211110111110
41020221010030
514333330242
61520052020
7320600463
oct110510414
938743443
1019042572
11a826a6a
126464010
133c396c3
1427599da
151a1239c
hex122910c

19042572 has 12 divisors (see below), whose sum is σ = 44432696. Its totient is φ = 6347520.

The previous prime is 19042571. The next prime is 19042577. The reversal of 19042572 is 27524091.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (19042571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 793429 + ... + 793452.

Almost surely, 219042572 is an apocalyptic number.

19042572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19042572 is an abundant number, since it is smaller than the sum of its proper divisors (25390124).

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

19042572 is a wasteful number, since it uses less digits than its factorization.

19042572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586888 (or 1586886 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 19042572 is about 4363.7795544688. The cubic root of 19042572 is about 267.0393130403.

The spelling of 19042572 in words is "nineteen million, forty-two thousand, five hundred seventy-two".

Divisors: 1 2 3 4 6 12 1586881 3173762 4760643 6347524 9521286 19042572