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8017428 = 2234331543
BaseRepresentation
bin11110100101011000010100
3120002022211210
4132211120110
54023024203
6443501420
7125101266
oct36453024
916068753
108017428
114586681
122827870
131879353
1410c9b36
15a85803
hex7a5614

8017428 has 24 divisors (see below), whose sum is σ = 18762688. Its totient is φ = 2664576.

The previous prime is 8017423. The next prime is 8017439. The reversal of 8017428 is 8247108.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 8017395 and 8017404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8017423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4425 + ... + 5967.

Almost surely, 28017428 is an apocalyptic number.

It is an amenable number.

8017428 is an abundant number, since it is smaller than the sum of its proper divisors (10745260).

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

8017428 is a wasteful number, since it uses less digits than its factorization.

8017428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1983 (or 1981 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 8017428 is about 2831.5063129013. The cubic root of 8017428 is about 200.1451279972.

The spelling of 8017428 in words is "eight million, seventeen thousand, four hundred twenty-eight".

Divisors: 1 2 3 4 6 12 433 866 1299 1543 1732 2598 3086 4629 5196 6172 9258 18516 668119 1336238 2004357 2672476 4008714 8017428