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28753029 = 331064927
BaseRepresentation
bin110110110101…
…1110010000101
32000002210202000
41231223302011
524330044104
62504135513
7466253034
oct155536205
960083660
1028753029
1115259638
129767599
135c59536
143b6671b
1527ce639
hex1b6bc85

28753029 has 8 divisors (see below), whose sum is σ = 42597120. Its totient is φ = 19168668.

The previous prime is 28753019. The next prime is 28753051. The reversal of 28753029 is 92035782.

It is a happy number.

It is not a de Polignac number, because 28753029 - 219 = 28228741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28752984 and 28753002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28753009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 532437 + ... + 532490.

It is an arithmetic number, because the mean of its divisors is an integer number (5324640).

Almost surely, 228753029 is an apocalyptic number.

It is an amenable number.

28753029 is a deficient number, since it is larger than the sum of its proper divisors (13844091).

28753029 is a wasteful number, since it uses less digits than its factorization.

28753029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064936 (or 1064930 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 28753029 is about 5362.1850956490. The cubic root of 28753029 is about 306.3570419099.

The spelling of 28753029 in words is "twenty-eight million, seven hundred fifty-three thousand, twenty-nine".

Divisors: 1 3 9 27 1064927 3194781 9584343 28753029