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28669482 = 23231191269
BaseRepresentation
bin110110101011…
…1011000101010
31222221120010200
41231113120222
524314410412
62502253030
7465454332
oct155273052
958846120
1028669482
1115201896
129727176
135c2a4ba
143b440c2
1527b49dc
hex1b5762a

28669482 has 48 divisors (see below), whose sum is σ = 64696320. Its totient is φ = 9165600.

The previous prime is 28669453. The next prime is 28669493. The reversal of 28669482 is 28496682.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106444 + ... + 106712.

It is an arithmetic number, because the mean of its divisors is an integer number (1347840).

Almost surely, 228669482 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28669482, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32348160).

28669482 is an abundant number, since it is smaller than the sum of its proper divisors (36026838).

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

28669482 is a wasteful number, since it uses less digits than its factorization.

28669482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499 (or 496 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 28669482 is about 5354.3890407777. The cubic root of 28669482 is about 306.0600292329.

The spelling of 28669482 in words is "twenty-eight million, six hundred sixty-nine thousand, four hundred eighty-two".

Divisors: 1 2 3 6 9 18 31 62 93 186 191 269 279 382 538 558 573 807 1146 1614 1719 2421 3438 4842 5921 8339 11842 16678 17763 25017 35526 50034 51379 53289 75051 102758 106578 150102 154137 308274 462411 924822 1592749 3185498 4778247 9556494 14334741 28669482