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100568180 = 2255028409
BaseRepresentation
bin1011111111010…
…00110001110100
321000020101121102
411333220301310
5201221140210
613551305232
72330546456
oct577506164
9230211542
10100568180
115184a3a9
122981b218
1317ab22cb
14d4dc2d6
158c67ea5
hex5fe8c74

100568180 has 12 divisors (see below), whose sum is σ = 211193220. Its totient is φ = 40227264.

The previous prime is 100568179. The next prime is 100568239. The reversal of 100568180 is 81865001.

It can be written as a sum of positive squares in 2 ways, for example, as 35378704 + 65189476 = 5948^2 + 8074^2 .

It is a super-2 number, since 2×1005681802 = 20227917657024800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2514185 + ... + 2514224.

It is an arithmetic number, because the mean of its divisors is an integer number (17599435).

Almost surely, 2100568180 is an apocalyptic number.

100568180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100568180 is an abundant number, since it is smaller than the sum of its proper divisors (110625040).

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

100568180 is a wasteful number, since it uses less digits than its factorization.

100568180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5028418 (or 5028416 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 100568180 is about 10028.3687606709. The cubic root of 100568180 is about 465.0363096478.

The spelling of 100568180 in words is "one hundred million, five hundred sixty-eight thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 5028409 10056818 20113636 25142045 50284090 100568180