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2972769 = 3990923
BaseRepresentation
bin1011010101110001100001
312121000212120
423111301201
51230112034
6143414453
734160652
oct13256141
95530776
102972769
111750538
12bb4429
13801147
14575529
153dac49
hex2d5c61

2972769 has 4 divisors (see below), whose sum is σ = 3963696. Its totient is φ = 1981844.

The previous prime is 2972747. The next prime is 2972771. The reversal of 2972769 is 9672792.

2972769 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 Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2972769 - 29 = 2972257 is a prime.

It is a super-2 number, since 2×29727692 = 17674711054722, which contains 22 as substring.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 2972769.

It is not an unprimeable number, because it can be changed into a prime (2972729) 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, 495459 + ... + 495464.

It is an arithmetic number, because the mean of its divisors is an integer number (990924).

22972769 is an apocalyptic number.

It is an amenable number.

2972769 is a deficient number, since it is larger than the sum of its proper divisors (990927).

2972769 is an equidigital number, since it uses as much as digits as its factorization.

2972769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990926.

The product of its digits is 95256, while the sum is 42.

The square root of 2972769 is about 1724.1719751811. The cubic root of 2972769 is about 143.7872533568.

It can be divided in two parts, 2972 and 769, that added together give a triangular number (3741 = T86).

The spelling of 2972769 in words is "two million, nine hundred seventy-two thousand, seven hundred sixty-nine".

Divisors: 1 3 990923 2972769