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19242669 = 319733251
BaseRepresentation
bin100100101100…
…1111010101101
31100012121222110
41021121322231
514411231134
61524234233
7322363035
oct111317255
940177873
1019242669
11a953336
12653b979
133ca97c4
1427ac8c5
151a517e9
hex1259ead

19242669 has 8 divisors (see below), whose sum is σ = 25677792. Its totient is φ = 12818000.

The previous prime is 19242667. The next prime is 19242709. The reversal of 19242669 is 96624291.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19242669 - 21 = 19242667 is a prime.

It is a super-2 number, since 2×192426692 = 740560620487122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19242667) 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, 4294 + ... + 7544.

It is an arithmetic number, because the mean of its divisors is an integer number (3209724).

Almost surely, 219242669 is an apocalyptic number.

It is an amenable number.

19242669 is a deficient number, since it is larger than the sum of its proper divisors (6435123).

19242669 is a wasteful number, since it uses less digits than its factorization.

19242669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5227.

The product of its digits is 46656, while the sum is 39.

The square root of 19242669 is about 4386.6466691540. The cubic root of 19242669 is about 267.9713946227.

The spelling of 19242669 in words is "nineteen million, two hundred forty-two thousand, six hundred sixty-nine".

Divisors: 1 3 1973 3251 5919 9753 6414223 19242669