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19049028 = 22313711587
BaseRepresentation
bin100100010101…
…0101001000100
31022211210100120
41020222221010
514334032103
61520141540
7320625345
oct110525104
938753316
1019049028
11a8308a9
1264678b0
133c3c61b
14275c0cc
151a14253
hex122aa44

19049028 has 24 divisors (see below), whose sum is σ = 44776032. Its totient is φ = 6302784.

The previous prime is 19049011. The next prime is 19049029. The reversal of 19049028 is 82094091.

It is a self number, because there is not a number n which added to its sum of digits gives 19049028.

It is not an unprimeable number, because it can be changed into a prime (19049029) 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, 4150 + ... + 7437.

It is an arithmetic number, because the mean of its divisors is an integer number (1865668).

Almost surely, 219049028 is an apocalyptic number.

It is an amenable number.

19049028 is an abundant number, since it is smaller than the sum of its proper divisors (25727004).

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

19049028 is a wasteful number, since it uses less digits than its factorization.

19049028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11731 (or 11729 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 19049028 is about 4364.5192175084. The cubic root of 19049028 is about 267.0694877284.

The spelling of 19049028 in words is "nineteen million, forty-nine thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 137 274 411 548 822 1644 11587 23174 34761 46348 69522 139044 1587419 3174838 4762257 6349676 9524514 19049028