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18941052 = 22313235279
BaseRepresentation
bin100100001000…
…0010001111100
31022122022020110
41020100101330
514322103202
61513550020
7316665504
oct110202174
938568213
1018941052
11a767769
126415310
133c02430
142730a04
1519e226c
hex121047c

18941052 has 48 divisors (see below), whose sum is σ = 49674240. Its totient is φ = 5573568.

The previous prime is 18941051. The next prime is 18941059. The reversal of 18941052 is 25014981.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18941051) 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, 949 + ... + 6227.

It is an arithmetic number, because the mean of its divisors is an integer number (1034880).

Almost surely, 218941052 is an apocalyptic number.

18941052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18941052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24837120).

18941052 is an abundant number, since it is smaller than the sum of its proper divisors (30733188).

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

18941052 is a wasteful number, since it uses less digits than its factorization.

18941052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5322 (or 5320 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 18941052 is about 4352.1318913838. The cubic root of 18941052 is about 266.5639194441.

The spelling of 18941052 in words is "eighteen million, nine hundred forty-one thousand, fifty-two".

Divisors: 1 2 3 4 6 12 13 23 26 39 46 52 69 78 92 138 156 276 299 598 897 1196 1794 3588 5279 10558 15837 21116 31674 63348 68627 121417 137254 205881 242834 274508 364251 411762 485668 728502 823524 1457004 1578421 3156842 4735263 6313684 9470526 18941052