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28879053 = 372359791
BaseRepresentation
bin110111000101…
…0100011001101
32000100012121120
41232022203031
524343112203
62510551153
7500316330
oct156124315
960305546
1028879053
1115335295
1298084b9
135ca19c8
143b9a617
152806b53
hex1b8a8cd

28879053 has 16 divisors (see below), whose sum is σ = 45920256. Its totient is φ = 15784560.

The previous prime is 28879049. The next prime is 28879091. The reversal of 28879053 is 35097882.

It is not a de Polignac number, because 28879053 - 22 = 28879049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28878996 and 28879014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28879013) 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 15 ways as a sum of consecutive naturals, for example, 29413 + ... + 30378.

It is an arithmetic number, because the mean of its divisors is an integer number (2870016).

Almost surely, 228879053 is an apocalyptic number.

28879053 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28879053 is a deficient number, since it is larger than the sum of its proper divisors (17041203).

28879053 is a wasteful number, since it uses less digits than its factorization.

28879053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59824.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 28879053 is about 5373.9234270689. The cubic root of 28879053 is about 306.8039753472.

The spelling of 28879053 in words is "twenty-eight million, eight hundred seventy-nine thousand, fifty-three".

Divisors: 1 3 7 21 23 69 161 483 59791 179373 418537 1255611 1375193 4125579 9626351 28879053