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2780083 is a prime number
BaseRepresentation
bin1010100110101110110011
312020020120001
422212232303
51202430313
6135330431
732426125
oct12465663
95206501
102780083
111629799
12b20a17
13764527
14525215
1539dadd
hex2a6bb3

2780083 has 2 divisors, whose sum is σ = 2780084. Its totient is φ = 2780082.

The previous prime is 2780077. The next prime is 2780101. The reversal of 2780083 is 3800872.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2780083 - 29 = 2779571 is a prime.

It is a super-2 number, since 2×27800832 = 15457722973778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2780053) 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 as a sum of consecutive naturals, namely, 1390041 + 1390042.

It is an arithmetic number, because the mean of its divisors is an integer number (1390042).

22780083 is an apocalyptic number.

2780083 is a deficient number, since it is larger than the sum of its proper divisors (1).

2780083 is an equidigital number, since it uses as much as digits as its factorization.

2780083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 2780083 is about 1667.3580899135. The cubic root of 2780083 is about 140.6109861261.

The spelling of 2780083 in words is "two million, seven hundred eighty thousand, eighty-three".