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244100140 = 22547259681
BaseRepresentation
bin11101000110010…
…10110000101100
3122000022120102221
432203022300230
5444442201030
640115525124
76022550134
oct1643126054
9560276387
10244100140
11115874059
12698b97a4
133b75816b
14245c1ac4
151666ae7a
hexe8cac2c

244100140 has 24 divisors (see below), whose sum is σ = 523518912. Its totient is φ = 95562240.

The previous prime is 244100123. The next prime is 244100149. The reversal of 244100140 is 41001442.

It is not an unprimeable number, because it can be changed into a prime (244100149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128901 + ... + 130780.

It is an arithmetic number, because the mean of its divisors is an integer number (21813288).

Almost surely, 2244100140 is an apocalyptic number.

244100140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

244100140 is an abundant number, since it is smaller than the sum of its proper divisors (279418772).

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

244100140 is a wasteful number, since it uses less digits than its factorization.

244100140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259737 (or 259735 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 244100140 is about 15623.7044262876. The cubic root of 244100140 is about 624.9654508902.

Adding to 244100140 its reverse (41001442), we get a palindrome (285101582).

The spelling of 244100140 in words is "two hundred forty-four million, one hundred thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 47 94 188 235 470 940 259681 519362 1038724 1298405 2596810 5193620 12205007 24410014 48820028 61025035 122050070 244100140