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3155305540 = 225157765277
BaseRepresentation
bin1011110000010010…
…0010010001000100
322010220021010111011
42330010202101010
522430224234130
61241033052004
7141122440342
oct27404422104
98126233434
103155305540
11137a0a6832
12740857004
133b39202ca
1421d0b2992
1513702052a
hexbc122444

3155305540 has 12 divisors (see below), whose sum is σ = 6626141676. Its totient is φ = 1262122208.

The previous prime is 3155305537. The next prime is 3155305541. The reversal of 3155305540 is 455035513.

It can be written as a sum of positive squares in 2 ways, for example, as 2370521344 + 784784196 = 48688^2 + 28014^2 .

It is a super-4 number, since 4×31553055404 (a number of 39 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (3155305541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78882619 + ... + 78882658.

It is an arithmetic number, because the mean of its divisors is an integer number (552178473).

Almost surely, 23155305540 is an apocalyptic number.

It is an amenable number.

3155305540 is an abundant number, since it is smaller than the sum of its proper divisors (3470836136).

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

3155305540 is a wasteful number, since it uses less digits than its factorization.

3155305540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157765286 (or 157765284 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 31.

The square root of 3155305540 is about 56172.1064230281. The cubic root of 3155305540 is about 1466.7197500301.

The spelling of 3155305540 in words is "three billion, one hundred fifty-five million, three hundred five thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 157765277 315530554 631061108 788826385 1577652770 3155305540