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68284452 = 2235690371
BaseRepresentation
bin1000001000111…
…11000000100100
311202111012122210
410010133000210
5114440100302
610435323420
71456260015
oct404370044
9152435583
1068284452
11355aa135
121aa50570
13111baa02
1490d700c
155edc66c
hex411f024

68284452 has 12 divisors (see below), whose sum is σ = 159330416. Its totient is φ = 22761480.

The previous prime is 68284439. The next prime is 68284459. The reversal of 68284452 is 25448286.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 68284452.

It is not an unprimeable number, because it can be changed into a prime (68284459) 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, 2845174 + ... + 2845197.

Almost surely, 268284452 is an apocalyptic number.

It is an amenable number.

68284452 is an abundant number, since it is smaller than the sum of its proper divisors (91045964).

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

68284452 is a wasteful number, since it uses less digits than its factorization.

68284452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5690378 (or 5690376 counting only the distinct ones).

The product of its digits is 122880, while the sum is 39.

The square root of 68284452 is about 8263.4406877523. The cubic root of 68284452 is about 408.7338532278.

The spelling of 68284452 in words is "sixty-eight million, two hundred eighty-four thousand, four hundred fifty-two".

Divisors: 1 2 3 4 6 12 5690371 11380742 17071113 22761484 34142226 68284452