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907228081 = 2754132941
BaseRepresentation
bin110110000100110…
…011001110110001
32100020002221222001
4312010303032301
53324222244311
6230005014001
731324211554
oct6604631661
92306087861
10907228081
11426119981
122139b4301
13115c57666
14886bc69b
15549a84c1
hex361333b1

907228081 has 4 divisors (see below), whose sum is σ = 907288564. Its totient is φ = 907167600.

The previous prime is 907228043. The next prime is 907228087. The reversal of 907228081 is 180822709.

907228081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 180822709 = 1571151737.

It can be written as a sum of positive squares in 2 ways, for example, as 611078400 + 296149681 = 24720^2 + 17209^2 .

It is a cyclic number.

It is not a de Polignac number, because 907228081 - 221 = 905130929 is a prime.

It is a super-2 number, since 2×9072280812 = 1646125581909885122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 907228081.

It is not an unprimeable number, because it can be changed into a prime (907228087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11071 + ... + 44011.

It is an arithmetic number, because the mean of its divisors is an integer number (226822141).

Almost surely, 2907228081 is an apocalyptic number.

It is an amenable number.

907228081 is a deficient number, since it is larger than the sum of its proper divisors (60483).

907228081 is a wasteful number, since it uses less digits than its factorization.

907228081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60482.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 907228081 is about 30120.2271073775. The cubic root of 907228081 is about 968.0671757590.

The spelling of 907228081 in words is "nine hundred seven million, two hundred twenty-eight thousand, eighty-one".

Divisors: 1 27541 32941 907228081