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28124995 = 537152027
BaseRepresentation
bin110101101001…
…0011101000011
31221220220020111
41223102131003
524144444440
62442452151
7461026033
oct153223503
957826214
1028124995
111496a7a8
129504057
135a99712
143a418c3
1527084ea
hex1ad2743

28124995 has 8 divisors (see below), whose sum is σ = 34662384. Its totient is φ = 21891744.

The previous prime is 28124989. The next prime is 28125001. The reversal of 28124995 is 59942182.

It is an interprime number because it is at equal distance from previous prime (28124989) and next prime (28125001).

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 28124995 - 25 = 28124963 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 75829 + ... + 76198.

It is an arithmetic number, because the mean of its divisors is an integer number (4332798).

Almost surely, 228124995 is an apocalyptic number.

28124995 is a deficient number, since it is larger than the sum of its proper divisors (6537389).

28124995 is a wasteful number, since it uses less digits than its factorization.

28124995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152069.

The product of its digits is 51840, while the sum is 40.

The square root of 28124995 is about 5303.3003874946. The cubic root of 28124995 is about 304.1100817573.

The spelling of 28124995 in words is "twenty-eight million, one hundred twenty-four thousand, nine hundred ninety-five".

Divisors: 1 5 37 185 152027 760135 5624999 28124995