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18696468 = 2237733049
BaseRepresentation
bin100011101010…
…0100100010100
31022011212201210
41013110210110
514241241333
61504421420
7314626440
oct107244424
938155653
1018696468
11a60aa2a
126317870
133b47ccb
1426a9820
151994a63
hex11d4914

18696468 has 48 divisors (see below), whose sum is σ = 50556800. Its totient is φ = 5266944.

The previous prime is 18696463. The next prime is 18696479. The reversal of 18696468 is 86469681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18696463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4608 + ... + 7656.

Almost surely, 218696468 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18696468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25278400).

18696468 is an abundant number, since it is smaller than the sum of its proper divisors (31860332).

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

18696468 is a wasteful number, since it uses less digits than its factorization.

18696468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3136 (or 3134 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 18696468 is about 4323.9412576953. The cubic root of 18696468 is about 265.4115735754.

The spelling of 18696468 in words is "eighteen million, six hundred ninety-six thousand, four hundred sixty-eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 73 84 146 219 292 438 511 876 1022 1533 2044 3049 3066 6098 6132 9147 12196 18294 21343 36588 42686 64029 85372 128058 222577 256116 445154 667731 890308 1335462 1558039 2670924 3116078 4674117 6232156 9348234 18696468