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44688020 = 22513171877
BaseRepresentation
bin1010101001111…
…0001010010100
310010002101102212
42222132022110
542420004040
64233452552
71051561526
oct252361224
9103071385
1044688020
1123252853
1212b71158
139348620
145d13a16
153dcad65
hex2a9e294

44688020 has 24 divisors (see below), whose sum is σ = 101064264. Its totient is φ = 16500096.

The previous prime is 44688013. The next prime is 44688041. The reversal of 44688020 is 2088644.

It can be written as a sum of positive squares in 4 ways, for example, as 1811716 + 42876304 = 1346^2 + 6548^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85679 + ... + 86198.

It is an arithmetic number, because the mean of its divisors is an integer number (4211011).

Almost surely, 244688020 is an apocalyptic number.

It is an amenable number.

44688020 is an abundant number, since it is smaller than the sum of its proper divisors (56376244).

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

44688020 is a wasteful number, since it uses less digits than its factorization.

44688020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171899 (or 171897 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 44688020 is about 6684.9098722421. The cubic root of 44688020 is about 354.8654386530.

The spelling of 44688020 in words is "forty-four million, six hundred eighty-eight thousand, twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 171877 343754 687508 859385 1718770 2234401 3437540 4468802 8937604 11172005 22344010 44688020