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19001372 = 2213365411
BaseRepresentation
bin100100001111…
…1000000011100
31022202100222112
41020133000130
514331020442
61515133152
7320336405
oct110370034
938670875
1019001372
11a7a9015
1264441b8
133c23a20
1427489ac
151a05082
hex121f01c

19001372 has 12 divisors (see below), whose sum is σ = 35810376. Its totient is φ = 8769840.

The previous prime is 19001371. The next prime is 19001377. The reversal of 19001372 is 27310091.

It is a super-2 number, since 2×190013722 = 722104275764768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19001371) 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, 182654 + ... + 182757.

It is an arithmetic number, because the mean of its divisors is an integer number (2984198).

Almost surely, 219001372 is an apocalyptic number.

It is an amenable number.

19001372 is a deficient number, since it is larger than the sum of its proper divisors (16809004).

19001372 is a wasteful number, since it uses less digits than its factorization.

19001372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365428 (or 365426 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 19001372 is about 4359.0563198931. The cubic root of 19001372 is about 266.8465876072.

The spelling of 19001372 in words is "nineteen million, one thousand, three hundred seventy-two".

Divisors: 1 2 4 13 26 52 365411 730822 1461644 4750343 9500686 19001372