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78048236 = 2276614217
BaseRepresentation
bin1001010011011…
…10101111101100
312102212021001102
410221232233230
5124440020421
611424502232
71635253610
oct451565754
9172767042
1078048236
1140068882
122217a978
1313228bb6
14a519340
156cba60b
hex4a6ebec

78048236 has 24 divisors (see below), whose sum is σ = 156369696. Its totient is φ = 33390720.

The previous prime is 78048227. The next prime is 78048239. The reversal of 78048236 is 63284087.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 78048236.

It is not an unprimeable number, because it can be changed into a prime (78048239) 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, 16400 + ... + 20616.

It is an arithmetic number, because the mean of its divisors is an integer number (6515404).

Almost surely, 278048236 is an apocalyptic number.

It is an amenable number.

78048236 is an abundant number, since it is smaller than the sum of its proper divisors (78321460).

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

78048236 is a wasteful number, since it uses less digits than its factorization.

78048236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4889 (or 4887 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 78048236 is about 8834.4912700166. The cubic root of 78048236 is about 427.3539252189.

The spelling of 78048236 in words is "seventy-eight million, forty-eight thousand, two hundred thirty-six".

Divisors: 1 2 4 7 14 28 661 1322 2644 4217 4627 8434 9254 16868 18508 29519 59038 118076 2787437 5574874 11149748 19512059 39024118 78048236