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28986042 = 2343112349
BaseRepresentation
bin110111010010…
…0101010111010
32000112122101010
41232210222322
524410023132
62513134350
7501243261
oct156445272
960478333
1028986042
11153a8708
12985a3b6
13600b607
143bc75d8
1528286cc
hex1ba4aba

28986042 has 16 divisors (see below), whose sum is σ = 59320800. Its totient is φ = 9437232.

The previous prime is 28986011. The next prime is 28986053. The reversal of 28986042 is 24068982.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55917 + ... + 56432.

It is an arithmetic number, because the mean of its divisors is an integer number (3707550).

Almost surely, 228986042 is an apocalyptic number.

28986042 is an abundant number, since it is smaller than the sum of its proper divisors (30334758).

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

28986042 is a wasteful number, since it uses less digits than its factorization.

28986042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112397.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 28986042 is about 5383.8686833912. The cubic root of 28986042 is about 307.1823833960.

The spelling of 28986042 in words is "twenty-eight million, nine hundred eighty-six thousand, forty-two".

Divisors: 1 2 3 6 43 86 129 258 112349 224698 337047 674094 4831007 9662014 14493021 28986042