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2780092 = 22799289
BaseRepresentation
bin1010100110101110111100
312020020120101
422212232330
51202430332
6135330444
732426140
oct12465674
95206511
102780092
1116297a7
12b20a24
13764533
14525220
1539dae7
hex2a6bbc

2780092 has 12 divisors (see below), whose sum is σ = 5560240. Its totient is φ = 1191456.

The previous prime is 2780083. The next prime is 2780101. The reversal of 2780092 is 2900872.

It is an interprime number because it is at equal distance from previous prime (2780083) and next prime (2780101).

2780092 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 99289 = 2780092 / (2 + 7 + 8 + 0 + 0 + 9 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 2780092.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 49617 + ... + 49672.

22780092 is an apocalyptic number.

It is an amenable number.

2780092 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2780092 is a wasteful number, since it uses less digits than its factorization.

2780092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99300 (or 99298 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 2780092 is about 1667.3607887917. The cubic root of 2780092 is about 140.6111378599.

The spelling of 2780092 in words is "two million, seven hundred eighty thousand, ninety-two".

Divisors: 1 2 4 7 14 28 99289 198578 397156 695023 1390046 2780092