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78295952 = 247798849
BaseRepresentation
bin1001010101010…
…11001110010000
312110022211212002
410222223032100
5130020432302
611434053132
71640335040
oct452531620
9173284762
1078295952
11402179a9
122227a1a8
13132b4887
14a581720
156d18c02
hex4aab390

78295952 has 40 divisors (see below), whose sum is σ = 175584000. Its totient is φ = 33126912.

The previous prime is 78295927. The next prime is 78295957. The reversal of 78295952 is 25959287.

It is a super-2 number, since 2×782959522 = 12260512199172608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78295897 and 78295906.

It is not an unprimeable number, because it can be changed into a prime (78295957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4424 + ... + 13272.

It is an arithmetic number, because the mean of its divisors is an integer number (4389600).

Almost surely, 278295952 is an apocalyptic number.

It is a pronic number, being equal to 8848×8849.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78295952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87792000).

78295952 is an abundant number, since it is smaller than the sum of its proper divisors (97288048).

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

78295952 is a wasteful number, since it uses less digits than its factorization.

78295952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8943 (or 8937 counting only the distinct ones).

The product of its digits is 453600, while the sum is 47.

The square root of 78295952 is about 8848.4999858733. The cubic root of 78295952 is about 427.8055715729.

The spelling of 78295952 in words is "seventy-eight million, two hundred ninety-five thousand, nine hundred fifty-two".

Divisors: 1 2 4 7 8 14 16 28 56 79 112 158 316 553 632 1106 1264 2212 4424 8848 8849 17698 35396 61943 70792 123886 141584 247772 495544 699071 991088 1398142 2796284 4893497 5592568 9786994 11185136 19573988 39147976 78295952