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19204379 = 231396007
BaseRepresentation
bin100100101000…
…0100100011011
31100010200110022
41021100210123
514404020004
61523341055
7322143305
oct111204433
940120408
1019204379
11a927597
12652178b
133c9524c
14279c975
151a452be
hex125091b

19204379 has 8 divisors (see below), whose sum is σ = 20186880. Its totient is φ = 18234216.

The previous prime is 19204363. The next prime is 19204387. The reversal of 19204379 is 97340291.

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

It is not a de Polignac number, because 19204379 - 24 = 19204363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19204349) 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, 194 + ... + 6200.

It is an arithmetic number, because the mean of its divisors is an integer number (2523360).

Almost surely, 219204379 is an apocalyptic number.

19204379 is a deficient number, since it is larger than the sum of its proper divisors (982501).

19204379 is a wasteful number, since it uses less digits than its factorization.

19204379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6169.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 19204379 is about 4382.2801142784. The cubic root of 19204379 is about 267.7935357555.

The spelling of 19204379 in words is "nineteen million, two hundred four thousand, three hundred seventy-nine".

Divisors: 1 23 139 3197 6007 138161 834973 19204379