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100211020 = 22571355061
BaseRepresentation
bin1011111100100…
…01100101001100
320222120020200021
411332101211030
5201123223040
613535511524
72324531260
oct576214514
9228506607
10100211020
1151626028
12296885a4
13179b8880
14d4480a0
158be724a
hex5f9194c

100211020 has 48 divisors (see below), whose sum is σ = 259011648. Its totient is φ = 31714560.

The previous prime is 100211009. The next prime is 100211021. The reversal of 100211020 is 20112001.

Adding to 100211020 its reverse (20112001), we get a palindrome (120323021).

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a junction number, because it is equal to n+sod(n) for n = 100210994 and 100211012.

It is not an unprimeable number, because it can be changed into a prime (100211021) 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, 25711 + ... + 29350.

It is an arithmetic number, because the mean of its divisors is an integer number (5396076).

Almost surely, 2100211020 is an apocalyptic number.

100211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100211020 is an abundant number, since it is smaller than the sum of its proper divisors (158800628).

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

100211020 is a wasteful number, since it uses less digits than its factorization.

100211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55090 (or 55088 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 100211020 is about 10010.5454396851. The cubic root of 100211020 is about 464.4851433361.

The spelling of 100211020 in words is "one hundred million, two hundred eleven thousand, twenty".

Divisors: 1 2 4 5 7 10 13 14 20 26 28 35 52 65 70 91 130 140 182 260 364 455 910 1820 55061 110122 220244 275305 385427 550610 715793 770854 1101220 1431586 1541708 1927135 2863172 3578965 3854270 5010551 7157930 7708540 10021102 14315860 20042204 25052755 50105510 100211020