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28714626 = 23223431613
BaseRepresentation
bin110110110001…
…0011010000010
32000000212001200
41231202122002
524322332001
62503242030
7466033053
oct155423202
960025050
1028714626
11152327a6
129749316
135c44c05
143b5672a
1527c3086
hex1b62682

28714626 has 48 divisors (see below), whose sum is σ = 66470976. Its totient is φ = 8936928.

The previous prime is 28714589. The next prime is 28714639. The reversal of 28714626 is 62641782.

28714626 is a `hidden beast` number, since 28 + 7 + 1 + 4 + 626 = 666.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 16996 + ... + 18608.

It is an arithmetic number, because the mean of its divisors is an integer number (1384812).

Almost surely, 228714626 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28714626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33235488).

28714626 is an abundant number, since it is smaller than the sum of its proper divisors (37756350).

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

28714626 is a wasteful number, since it uses less digits than its factorization.

28714626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687 (or 1684 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 28714626 is about 5358.6029895860. The cubic root of 28714626 is about 306.2205893733.

The spelling of 28714626 in words is "twenty-eight million, seven hundred fourteen thousand, six hundred twenty-six".

Divisors: 1 2 3 6 9 18 23 43 46 69 86 129 138 207 258 387 414 774 989 1613 1978 2967 3226 4839 5934 8901 9678 14517 17802 29034 37099 69359 74198 111297 138718 208077 222594 333891 416154 624231 667782 1248462 1595257 3190514 4785771 9571542 14357313 28714626