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8028993 = 372193283
BaseRepresentation
bin11110101000001101000001
3120002220201010
4132220031001
54023411433
6444031133
7125150100
oct36501501
916086633
108028993
114594335
1228324a9
1318816ab
1410d0037
15a88e63
hex7a8341

8028993 has 24 divisors (see below), whose sum is σ = 12561888. Its totient is φ = 4548096.

The previous prime is 8028983. The next prime is 8028997. The reversal of 8028993 is 3998208.

It is not a de Polignac number, because 8028993 - 25 = 8028961 is a prime.

8028993 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8028997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28230 + ... + 28512.

It is an arithmetic number, because the mean of its divisors is an integer number (523412).

Almost surely, 28028993 is an apocalyptic number.

It is an amenable number.

8028993 is a deficient number, since it is larger than the sum of its proper divisors (4532895).

8028993 is a wasteful number, since it uses less digits than its factorization.

8028993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 8028993 is about 2833.5477761986. The cubic root of 8028993 is about 200.2413170466.

The spelling of 8028993 in words is "eight million, twenty-eight thousand, nine hundred ninety-three".

Divisors: 1 3 7 21 49 147 193 283 579 849 1351 1981 4053 5943 9457 13867 28371 41601 54619 163857 382333 1146999 2676331 8028993