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28077068 = 2253132439
BaseRepresentation
bin110101100011…
…0110000001100
31221211110111102
41223012300030
524141431233
62441442232
7460436225
oct153066014
957743442
1028077068
1114937798
1294a0378
135a80966
143a2c24c
1526e91e8
hex1ac6c0c

28077068 has 12 divisors (see below), whose sum is σ = 50062320. Its totient is φ = 13773552.

The previous prime is 28077037. The next prime is 28077073. The reversal of 28077068 is 86077082.

It is an unprimeable number.

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, 66008 + ... + 66431.

It is an arithmetic number, because the mean of its divisors is an integer number (4171860).

Almost surely, 228077068 is an apocalyptic number.

It is an amenable number.

28077068 is a deficient number, since it is larger than the sum of its proper divisors (21985252).

28077068 is a wasteful number, since it uses less digits than its factorization.

28077068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132496 (or 132494 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 28077068 is about 5298.7798595526. The cubic root of 28077068 is about 303.9372417772.

The spelling of 28077068 in words is "twenty-eight million, seventy-seven thousand, sixty-eight".

Divisors: 1 2 4 53 106 212 132439 264878 529756 7019267 14038534 28077068