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28039054 = 260123327
BaseRepresentation
bin110101011110…
…1011110001110
31221202112100111
41222331132032
524134222204
62440550234
7460220341
oct152753616
957675314
1028039054
111491117a
12948237a
135a69574
143a1c458
1526dcd04
hex1abd78e

28039054 has 8 divisors (see below), whose sum is σ = 42130368. Its totient is φ = 13995600.

The previous prime is 28039049. The next prime is 28039057. The reversal of 28039054 is 45093082.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28039057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10462 + ... + 12865.

It is an arithmetic number, because the mean of its divisors is an integer number (5266296).

Almost surely, 228039054 is an apocalyptic number.

28039054 is a deficient number, since it is larger than the sum of its proper divisors (14091314).

28039054 is a wasteful number, since it uses less digits than its factorization.

28039054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23930.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 28039054 is about 5295.1915923789. The cubic root of 28039054 is about 303.8000112972.

The spelling of 28039054 in words is "twenty-eight million, thirty-nine thousand, fifty-four".

Divisors: 1 2 601 1202 23327 46654 14019527 28039054