Search a number
-
+
78025350 = 23521340013
BaseRepresentation
bin1001010011010…
…01001010000110
312102211002122210
410221221022012
5124433302400
611424204250
71635130104
oct451511206
9172732583
1078025350
1140052667
1222169686
131321b660
14a510c74
156cb3950
hex4a69286

78025350 has 48 divisors (see below), whose sum is σ = 208392912. Its totient is φ = 19205760.

The previous prime is 78025331. The next prime is 78025351. The reversal of 78025350 is 5352087.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78025351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18057 + ... + 21956.

It is an arithmetic number, because the mean of its divisors is an integer number (4341519).

Almost surely, 278025350 is an apocalyptic number.

78025350 is an abundant number, since it is smaller than the sum of its proper divisors (130367562).

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

78025350 is a wasteful number, since it uses less digits than its factorization.

78025350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40041 (or 40036 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 78025350 is about 8833.1959108807. The cubic root of 78025350 is about 427.3121502920.

The spelling of 78025350 in words is "seventy-eight million, twenty-five thousand, three hundred fifty".

Divisors: 1 2 3 5 6 10 13 15 25 26 30 39 50 65 75 78 130 150 195 325 390 650 975 1950 40013 80026 120039 200065 240078 400130 520169 600195 1000325 1040338 1200390 1560507 2000650 2600845 3000975 3121014 5201690 6001950 7802535 13004225 15605070 26008450 39012675 78025350