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18980092 = 2217279119
BaseRepresentation
bin100100001100…
…1110011111100
31022201021210101
41020121303330
514324330332
61514450444
7320220355
oct110316374
938637711
1018980092
11a79402a
126433a24
133c17131
142740d2c
1519edae7
hex1219cfc

18980092 has 12 divisors (see below), whose sum is σ = 35169120. Its totient is φ = 8931776.

The previous prime is 18980077. The next prime is 18980099. The reversal of 18980092 is 29008981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18980099) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 139492 + ... + 139627.

It is an arithmetic number, because the mean of its divisors is an integer number (2930760).

Almost surely, 218980092 is an apocalyptic number.

It is an amenable number.

18980092 is a deficient number, since it is larger than the sum of its proper divisors (16189028).

18980092 is a wasteful number, since it uses less digits than its factorization.

18980092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279140 (or 279138 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 18980092 is about 4356.6147408280. The cubic root of 18980092 is about 266.7469348642.

The spelling of 18980092 in words is "eighteen million, nine hundred eighty thousand, ninety-two".

Divisors: 1 2 4 17 34 68 279119 558238 1116476 4745023 9490046 18980092