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18150054 = 23131937331
BaseRepresentation
bin100010100111…
…1001010100110
31021011010012020
41011033022212
514121300204
61445004010
7310162416
oct105171246
937133166
1018150054
11a27744a
1260b3606
1339b63a0
1425a6646
1518d7bd9
hex114f2a6

18150054 has 64 divisors (see below), whose sum is σ = 42389760. Its totient is φ = 5132160.

The previous prime is 18150047. The next prime is 18150079. The reversal of 18150054 is 45005181.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54669 + ... + 54999.

It is an arithmetic number, because the mean of its divisors is an integer number (662340).

Almost surely, 218150054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18150054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21194880).

18150054 is an abundant number, since it is smaller than the sum of its proper divisors (24239706).

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

18150054 is a wasteful number, since it uses less digits than its factorization.

18150054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 18150054 is about 4260.2880184326. The cubic root of 18150054 is about 262.8003709027.

The spelling of 18150054 in words is "eighteen million, one hundred fifty thousand, fifty-four".

Divisors: 1 2 3 6 13 19 26 37 38 39 57 74 78 111 114 222 247 331 481 494 662 703 741 962 993 1406 1443 1482 1986 2109 2886 4218 4303 6289 8606 9139 12247 12578 12909 18278 18867 24494 25818 27417 36741 37734 54834 73482 81757 159211 163514 232693 245271 318422 465386 477633 490542 698079 955266 1396158 3025009 6050018 9075027 18150054