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415428 = 223132663
BaseRepresentation
bin1100101011011000100
3210002212020
41211123010
5101243203
612523140
73350106
oct1453304
9702766
10415428
11264132
121804b0
13117120
14ab576
1583153
hex656c4

415428 has 24 divisors (see below), whose sum is σ = 1044288. Its totient is φ = 127776.

The previous prime is 415427. The next prime is 415447. The reversal of 415428 is 824514.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 415398 and 415407.

It is not an unprimeable number, because it can be changed into a prime (415427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1176 + ... + 1487.

It is an arithmetic number, because the mean of its divisors is an integer number (43512).

2415428 is an apocalyptic number.

It is an amenable number.

415428 is an abundant number, since it is smaller than the sum of its proper divisors (628860).

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

415428 is a wasteful number, since it uses less digits than its factorization.

415428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2683 (or 2681 counting only the distinct ones).

The product of its digits is 1280, while the sum is 24.

The square root of 415428 is about 644.5370431558. The cubic root of 415428 is about 74.6159927570.

The spelling of 415428 in words is "four hundred fifteen thousand, four hundred twenty-eight".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 2663 5326 7989 10652 15978 31956 34619 69238 103857 138476 207714 415428