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28234151 = 1111632207
BaseRepresentation
bin110101110110…
…1000110100111
31222010102222022
41223231012213
524211443101
62445053355
7461662211
oct153550647
958112868
1028234151
1114a34810
12955725b
135b072ca
143a6d5b1
15272aa1b
hex1aed1a7

28234151 has 8 divisors (see below), whose sum is σ = 30841344. Its totient is φ = 25633720.

The previous prime is 28234111. The next prime is 28234153. The reversal of 28234151 is 15143282.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-28234151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28234151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28234153) 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, 11690 + ... + 13896.

It is an arithmetic number, because the mean of its divisors is an integer number (3855168).

Almost surely, 228234151 is an apocalyptic number.

28234151 is a deficient number, since it is larger than the sum of its proper divisors (2607193).

28234151 is a wasteful number, since it uses less digits than its factorization.

28234151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3381.

The product of its digits is 1920, while the sum is 26.

The square root of 28234151 is about 5313.5817486889. The cubic root of 28234151 is about 304.5030013824.

The spelling of 28234151 in words is "twenty-eight million, two hundred thirty-four thousand, one hundred fifty-one".

Divisors: 1 11 1163 2207 12793 24277 2566741 28234151