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28746752 = 21067419
BaseRepresentation
bin110110110101…
…0010000000000
32000002111010112
41231222100000
524324344002
62504050452
7466225526
oct155522000
960074115
1028746752
1115254951
129763a28
135c56718
143b64316
1527cc852
hex1b6a400

28746752 has 44 divisors (see below), whose sum is σ = 58462320. Its totient is φ = 14125056.

The previous prime is 28746701. The next prime is 28746763. The reversal of 28746752 is 25764782.

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, 68399 + ... + 68817.

Almost surely, 228746752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28746752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29231160).

28746752 is an abundant number, since it is smaller than the sum of its proper divisors (29715568).

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

28746752 is an equidigital number, since it uses as much as digits as its factorization.

28746752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506 (or 488 counting only the distinct ones).

The product of its digits is 188160, while the sum is 41.

The square root of 28746752 is about 5361.5997612653. The cubic root of 28746752 is about 306.3347469475.

The spelling of 28746752 in words is "twenty-eight million, seven hundred forty-six thousand, seven hundred fifty-two".

Divisors: 1 2 4 8 16 32 64 67 128 134 256 268 419 512 536 838 1024 1072 1676 2144 3352 4288 6704 8576 13408 17152 26816 28073 34304 53632 56146 68608 107264 112292 214528 224584 429056 449168 898336 1796672 3593344 7186688 14373376 28746752