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109010020 = 2257778643
BaseRepresentation
bin1100111111101…
…01110001100100
321121010021122011
412133311301210
5210401310040
614452244004
72462366320
oct637656144
9247107564
10109010020
1156595929
1230610604
1319779892
1410698980
1598843ea
hex67f5c64

109010020 has 24 divisors (see below), whose sum is σ = 261624384. Its totient is φ = 37374816.

The previous prime is 109010017. The next prime is 109010023. The reversal of 109010020 is 20010901.

It is an interprime number because it is at equal distance from previous prime (109010017) and next prime (109010023).

It is not an unprimeable number, because it can be changed into a prime (109010023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389182 + ... + 389461.

It is an arithmetic number, because the mean of its divisors is an integer number (10901016).

Almost surely, 2109010020 is an apocalyptic number.

109010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109010020 is an abundant number, since it is smaller than the sum of its proper divisors (152614364).

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

109010020 is a wasteful number, since it uses less digits than its factorization.

109010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778659 (or 778657 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 109010020 is about 10440.7863688517. The cubic root of 109010020 is about 477.7002549941.

Adding to 109010020 its reverse (20010901), we get a palindrome (129020921).

The spelling of 109010020 in words is "one hundred nine million, ten thousand, twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 778643 1557286 3114572 3893215 5450501 7786430 10901002 15572860 21802004 27252505 54505010 109010020