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19016042 = 219947779
BaseRepresentation
bin100100010001…
…0100101101010
31022210010002212
41020202211222
514332003132
61515325122
7320430233
oct110424552
938703085
1019016042
11a809041
1264507a2
133c2a5c6
14275008a
151a095b2
hex122296a

19016042 has 8 divisors (see below), whose sum is σ = 28668000. Its totient is φ = 9460044.

The previous prime is 19016033. The next prime is 19016057. The reversal of 19016042 is 24061091.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 19015999 and 19016017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23492 + ... + 24287.

It is an arithmetic number, because the mean of its divisors is an integer number (3583500).

Almost surely, 219016042 is an apocalyptic number.

19016042 is a deficient number, since it is larger than the sum of its proper divisors (9651958).

19016042 is a wasteful number, since it uses less digits than its factorization.

19016042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47980.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 19016042 is about 4360.7386988904. The cubic root of 19016042 is about 266.9152428678.

The spelling of 19016042 in words is "nineteen million, sixteen thousand, forty-two".

Divisors: 1 2 199 398 47779 95558 9508021 19016042