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28150136 = 2377092
BaseRepresentation
bin110101101100…
…0100101111000
31221222011201122
41223120211320
524201301021
62443204412
7461162240
oct153304570
957864648
1028150136
1114987683
129516708
135aa7cb1
143a4ab20
152710bab
hex1ad8978

28150136 has 24 divisors (see below), whose sum is σ = 60406920. Its totient is φ = 12047328.

The previous prime is 28150121. The next prime is 28150163. The reversal of 28150136 is 63105182.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 39350 + ... + 40058.

It is an arithmetic number, because the mean of its divisors is an integer number (2516955).

Almost surely, 228150136 is an apocalyptic number.

It is an amenable number.

28150136 is an abundant number, since it is smaller than the sum of its proper divisors (32256784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28150136 is an frugal number, since it uses more digits than its factorization.

28150136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 28150136 is about 5305.6701744454. The cubic root of 28150136 is about 304.2006696792.

The spelling of 28150136 in words is "twenty-eight million, one hundred fifty thousand, one hundred thirty-six".

Divisors: 1 2 4 7 8 14 28 56 709 1418 2836 4963 5672 9926 19852 39704 502681 1005362 2010724 3518767 4021448 7037534 14075068 28150136