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68428801 = 79775543
BaseRepresentation
bin1000001010000…
…10010000000001
311202202112200001
410011002100001
5120004210201
610442400001
71460430610
oct405022001
9152675601
1068428801
1135698631
121ab00001
131123b61c
149133877
15601a301
hex4142401

68428801 has 4 divisors (see below), whose sum is σ = 78204352. Its totient is φ = 58653252.

The previous prime is 68428793. The next prime is 68428819. The reversal of 68428801 is 10882486.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 68428801 - 23 = 68428793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68428831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4887765 + ... + 4887778.

It is an arithmetic number, because the mean of its divisors is an integer number (19551088).

Almost surely, 268428801 is an apocalyptic number.

It is an amenable number.

68428801 is a deficient number, since it is larger than the sum of its proper divisors (9775551).

68428801 is an equidigital number, since it uses as much as digits as its factorization.

68428801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9775550.

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 68428801 is about 8272.1702714584. The cubic root of 68428801 is about 409.0216629985.

The spelling of 68428801 in words is "sixty-eight million, four hundred twenty-eight thousand, eight hundred one".

Divisors: 1 7 9775543 68428801