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18672054 = 2319715797
BaseRepresentation
bin100011100111…
…0100110110110
31022010122020120
41013032212312
514240001204
61504112410
7314465322
oct107164666
938118216
1018672054
11a5a3655
126305706
133b39b6b
1426a0982
15198c6d9
hex11ce9b6

18672054 has 16 divisors (see below), whose sum is σ = 37536048. Its totient is φ = 6192032.

The previous prime is 18672053. The next prime is 18672107. The reversal of 18672054 is 45027681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18672053) 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, 6717 + ... + 9080.

It is an arithmetic number, because the mean of its divisors is an integer number (2346003).

Almost surely, 218672054 is an apocalyptic number.

18672054 is an abundant number, since it is smaller than the sum of its proper divisors (18863994).

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

18672054 is a wasteful number, since it uses less digits than its factorization.

18672054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15999.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 18672054 is about 4321.1172166466. The cubic root of 18672054 is about 265.2959977236.

The spelling of 18672054 in words is "eighteen million, six hundred seventy-two thousand, fifty-four".

Divisors: 1 2 3 6 197 394 591 1182 15797 31594 47391 94782 3112009 6224018 9336027 18672054