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100492 = 2273797
BaseRepresentation
bin11000100010001100
312002211221
4120202030
511203432
62053124
7565660
oct304214
9162757
10100492
1169557
124a1a4
1336982
14288a0
151eb97
hex1888c

100492 has 24 divisors (see below), whose sum is σ = 208544. Its totient is φ = 41472.

The previous prime is 100483. The next prime is 100493. The reversal of 100492 is 294001.

100492 is nontrivially palindromic in base 12.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (100493) by changing a digit.

100492 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 988 + ... + 1084.

2100492 is an apocalyptic number.

100492 is the 259-th pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104272).

100492 is an abundant number, since it is smaller than the sum of its proper divisors (108052).

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

100492 is a wasteful number, since it uses less digits than its factorization.

100492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 100492 is about 317.0047318259. The cubic root of 100492 is about 46.4918858929.

Adding to 100492 its reverse (294001), we get a palindrome (394493).

The spelling of 100492 in words is "one hundred thousand, four hundred ninety-two".

Divisors: 1 2 4 7 14 28 37 74 97 148 194 259 388 518 679 1036 1358 2716 3589 7178 14356 25123 50246 100492