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40578230 = 25711151349
BaseRepresentation
bin1001101011001…
…0110010110110
32211100120212102
42122302302312
540342000410
64005422102
71001623610
oct232626266
984316772
1040578230
11209a6030
121170a932
138539ab4
145563db0
1538682a5
hex26b2cb6

40578230 has 64 divisors (see below), whose sum is σ = 91929600. Its totient is φ = 12528000.

The previous prime is 40578227. The next prime is 40578277. The reversal of 40578230 is 3287504.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40578193 and 40578202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116096 + ... + 116444.

It is an arithmetic number, because the mean of its divisors is an integer number (1436400).

Almost surely, 240578230 is an apocalyptic number.

40578230 is an abundant number, since it is smaller than the sum of its proper divisors (51351370).

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

40578230 is a wasteful number, since it uses less digits than its factorization.

40578230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 40578230 is about 6370.1043947490. The cubic root of 40578230 is about 343.6352441189.

The spelling of 40578230 in words is "forty million, five hundred seventy-eight thousand, two hundred thirty".

Divisors: 1 2 5 7 10 11 14 22 35 55 70 77 110 151 154 302 349 385 698 755 770 1057 1510 1661 1745 2114 2443 3322 3490 3839 4886 5285 7678 8305 10570 11627 12215 16610 19195 23254 24430 26873 38390 52699 53746 58135 105398 116270 134365 263495 268730 368893 526990 579689 737786 1159378 1844465 2898445 3688930 4057823 5796890 8115646 20289115 40578230