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75430680 = 23351348353
BaseRepresentation
bin1000111111011…
…11101100011000
312020221021102220
410133233230120
5123302240210
611252424040
71604102343
oct437575430
9166837386
1075430680
1139640206
1221318020
1312820650
14a03745a
15694ec70
hex47efb18

75430680 has 64 divisors (see below), whose sum is σ = 243704160. Its totient is φ = 18567168.

The previous prime is 75430673. The next prime is 75430687. The reversal of 75430680 is 8603457.

It is an interprime number because it is at equal distance from previous prime (75430673) and next prime (75430687).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75430687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22617 + ... + 25736.

Almost surely, 275430680 is an apocalyptic number.

It is an amenable number.

75430680 is an abundant number, since it is smaller than the sum of its proper divisors (168273480).

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

75430680 is a wasteful number, since it uses less digits than its factorization.

75430680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48380 (or 48376 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 75430680 is about 8685.0837647083. The cubic root of 75430680 is about 422.5220137217.

The spelling of 75430680 in words is "seventy-five million, four hundred thirty thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 13 15 20 24 26 30 39 40 52 60 65 78 104 120 130 156 195 260 312 390 520 780 1560 48353 96706 145059 193412 241765 290118 386824 483530 580236 628589 725295 967060 1160472 1257178 1450590 1885767 1934120 2514356 2901180 3142945 3771534 5028712 5802360 6285890 7543068 9428835 12571780 15086136 18857670 25143560 37715340 75430680