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2780133 = 34012311
BaseRepresentation
bin1010100110101111100101
312020020121220
422212233211
51202431013
6135330553
732426226
oct12465745
95206556
102780133
111629834
12b20a59
13764565
1452524d
1539db23
hex2a6be5

2780133 has 8 divisors (see below), whose sum is σ = 3717696. Its totient is φ = 1848000.

The previous prime is 2780131. The next prime is 2780149. The reversal of 2780133 is 3310872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2780133 - 21 = 2780131 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780131) 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, 48 + ... + 2358.

It is an arithmetic number, because the mean of its divisors is an integer number (464712).

22780133 is an apocalyptic number.

It is an amenable number.

2780133 is a deficient number, since it is larger than the sum of its proper divisors (937563).

2780133 is a wasteful number, since it uses less digits than its factorization.

2780133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2715.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 2780133 is about 1667.3730836259. The cubic root of 2780133 is about 140.6118290874.

The spelling of 2780133 in words is "two million, seven hundred eighty thousand, one hundred thirty-three".

Divisors: 1 3 401 1203 2311 6933 926711 2780133