Search a number
-
+
19117490 = 257273107
BaseRepresentation
bin100100011101…
…1010110110010
31022222021021012
41020323112302
514343224430
61521430522
7321332060
oct110732662
938867235
1019117490
11a878287
12649b442
133c64832
142779030
151a29695
hex123b5b2

19117490 has 16 divisors (see below), whose sum is σ = 39327552. Its totient is φ = 6554544.

The previous prime is 19117463. The next prime is 19117513. The reversal of 19117490 is 9471191.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136484 + ... + 136623.

It is an arithmetic number, because the mean of its divisors is an integer number (2457972).

Almost surely, 219117490 is an apocalyptic number.

19117490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19117490 is an abundant number, since it is smaller than the sum of its proper divisors (20210062).

19117490 is a wasteful number, since it uses less digits than its factorization.

19117490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273121.

The product of its (nonzero) digits is 2268, while the sum is 32.

The square root of 19117490 is about 4372.3552005755. The cubic root of 19117490 is about 267.3890534756.

The spelling of 19117490 in words is "nineteen million, one hundred seventeen thousand, four hundred ninety".

Divisors: 1 2 5 7 10 14 35 70 273107 546214 1365535 1911749 2731070 3823498 9558745 19117490