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84242128 = 2431169843
BaseRepresentation
bin1010000010101…
…10111011010000
312212111221110211
411001112323100
5133031222003
612205333504
72042021605
oct501267320
9185457424
1084242128
11436093a3
1224267294
13145b7219
14b28c6ac
1575e096d
hex5056ed0

84242128 has 20 divisors (see below), whose sum is σ = 168485248. Its totient is φ = 40762080.

The previous prime is 84242113. The next prime is 84242141. The reversal of 84242128 is 82124248.

84242128 is an admirable number.

It is a super-2 number, since 2×842421282 = 14193472259936768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 84242128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84426 + ... + 85417.

Almost surely, 284242128 is an apocalyptic number.

It is an amenable number.

84242128 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

84242128 is a wasteful number, since it uses less digits than its factorization.

84242128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169882 (or 169876 counting only the distinct ones).

The product of its digits is 8192, while the sum is 31.

The square root of 84242128 is about 9178.3510501615. The cubic root of 84242128 is about 438.3723056457.

The spelling of 84242128 in words is "eighty-four million, two hundred forty-two thousand, one hundred twenty-eight".

Divisors: 1 2 4 8 16 31 62 124 248 496 169843 339686 679372 1358744 2717488 5265133 10530266 21060532 42121064 84242128