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BaseRepresentation
bin1011111011101…
…10101110001000
320222100122202110
411331312232020
5201111213000
613533302320
72323562436
oct575665610
9228318673
10100101000
11515603aa
12296349a0
131797a77c
14d419d56
158bc4850
hex5f76b88

100101000 has 128 divisors (see below), whose sum is σ = 318015360. Its totient is φ = 26208000.

The previous prime is 100100927. The next prime is 100101007. The reversal of 100101000 is 101001.

It is a Harshad number since it is a multiple of its sum of digits (3).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is not an unprimeable number, because it can be changed into a prime (100101007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182727 + ... + 183273.

It is an arithmetic number, because the mean of its divisors is an integer number (2484495).

Almost surely, 2100101000 is an apocalyptic number.

100101000 is a gapful number since it is divisible by the number (10) 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 100101000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159007680).

100101000 is an abundant number, since it is smaller than the sum of its proper divisors (217914360).

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

100101000 is a wasteful number, since it uses less digits than its factorization.

100101000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 618 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 3.

The square root of 100101000 is about 10005.0487255185. The cubic root of 100101000 is about 464.3150976050.

Adding to 100101000 its reverse (101001), we get a palindrome (100202001).

Subtracting from 100101000 its reverse (101001), we obtain a palindrome (99999999).

The spelling of 100101000 in words is "one hundred million, one hundred one thousand".