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19808248 = 2341131461
BaseRepresentation
bin100101110001…
…1111111111000
31101021100210211
41023203333320
520032330443
61544320504
7330236665
oct113437770
941240724
1019808248
11101aa259
126773134
134147075
1428b8a6c
151b1419d
hex12e3ff8

19808248 has 32 divisors (see below), whose sum is σ = 38419920. Its totient is φ = 9568000.

The previous prime is 19808233. The next prime is 19808293. The reversal of 19808248 is 84280891.

It is a self number, because there is not a number n which added to its sum of digits gives 19808248.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42738 + ... + 43198.

Almost surely, 219808248 is an apocalyptic number.

It is an amenable number.

19808248 is a deficient number, since it is larger than the sum of its proper divisors (18611672).

19808248 is a wasteful number, since it uses less digits than its factorization.

19808248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 19808248 is about 4450.6457958368. The cubic root of 19808248 is about 270.5714827317.

The spelling of 19808248 in words is "nineteen million, eight hundred eight thousand, two hundred forty-eight".

Divisors: 1 2 4 8 41 82 131 164 262 328 461 524 922 1048 1844 3688 5371 10742 18901 21484 37802 42968 60391 75604 120782 151208 241564 483128 2476031 4952062 9904124 19808248