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28814760 = 233251347131
BaseRepresentation
bin110110111101…
…0110110101000
32000012221102100
41231322312220
524334033020
62505333400
7466631022
oct155726650
960187370
1028814760
11152a0a57
129797260
135c7b670
143b81012
1527e2a90
hex1b7ada8

28814760 has 192 divisors, whose sum is σ = 103783680. Its totient is φ = 6888960.

The previous prime is 28814743. The next prime is 28814767. The reversal of 28814760 is 6741882.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28814767) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 219895 + ... + 220025.

It is an arithmetic number, because the mean of its divisors is an integer number (540540).

Almost surely, 228814760 is an apocalyptic number.

28814760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28814760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51891840).

28814760 is an abundant number, since it is smaller than the sum of its proper divisors (74968920).

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

28814760 is a wasteful number, since it uses less digits than its factorization.

28814760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 28814760 is about 5367.9381516556. The cubic root of 28814760 is about 306.5761284922.

The spelling of 28814760 in words is "twenty-eight million, eight hundred fourteen thousand, seven hundred sixty".