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28614151 = 130721893
BaseRepresentation
bin110110100100…
…1111000000111
31222211202020101
41231021320013
524311123101
62501144531
7465134116
oct155117007
958752211
1028614151
1115174265
1296bb147
135c0b267
143b2bc7d
1527a3401
hex1b49e07

28614151 has 4 divisors (see below), whose sum is σ = 28637352. Its totient is φ = 28590952.

The previous prime is 28614083. The next prime is 28614169. The reversal of 28614151 is 15141682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28614151 - 213 = 28605959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28614191) 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 3 ways as a sum of consecutive naturals, for example, 9640 + ... + 12253.

It is an arithmetic number, because the mean of its divisors is an integer number (7159338).

Almost surely, 228614151 is an apocalyptic number.

28614151 is a deficient number, since it is larger than the sum of its proper divisors (23201).

28614151 is a wasteful number, since it uses less digits than its factorization.

28614151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23200.

The product of its digits is 1920, while the sum is 28.

The square root of 28614151 is about 5349.2196627172. The cubic root of 28614151 is about 305.8630077270.

The spelling of 28614151 in words is "twenty-eight million, six hundred fourteen thousand, one hundred fifty-one".

Divisors: 1 1307 21893 28614151