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28352051 = 713311561
BaseRepresentation
bin110110000100…
…1111000110011
31222100102200222
41230021320303
524224231201
62451403255
7462663020
oct154117063
958312628
1028352051
1115005352
1295b352b
135b48b80
143aa0547
15275091b
hex1b09e33

28352051 has 8 divisors (see below), whose sum is σ = 34894944. Its totient is φ = 22432320.

The previous prime is 28352029. The next prime is 28352059. The reversal of 28352051 is 15025382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28352051 - 26 = 28351987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28352051.

It is not an unprimeable number, because it can be changed into a prime (28352059) 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 7 ways as a sum of consecutive naturals, for example, 155690 + ... + 155871.

It is an arithmetic number, because the mean of its divisors is an integer number (4361868).

Almost surely, 228352051 is an apocalyptic number.

28352051 is a deficient number, since it is larger than the sum of its proper divisors (6542893).

28352051 is a wasteful number, since it uses less digits than its factorization.

28352051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311581.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 28352051 is about 5324.6644025704. The cubic root of 28352051 is about 304.9262600556.

The spelling of 28352051 in words is "twenty-eight million, three hundred fifty-two thousand, fifty-one".

Divisors: 1 7 13 91 311561 2180927 4050293 28352051