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75737980 = 2253786899
BaseRepresentation
bin1001000001110…
…10101101111100
312021111212222101
410200322231330
5123342103410
611303154444
71606522303
oct440725574
9167455871
1075737980
113983007a
1221445a24
13128ca496
14a0b743a
1569b0d3a
hex483ab7c

75737980 has 12 divisors (see below), whose sum is σ = 159049800. Its totient is φ = 30295184.

The previous prime is 75737969. The next prime is 75737993. The reversal of 75737980 is 8973757.

It is a happy number.

It is a super-2 number, since 2×757379802 = 11472483228960800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 75737980.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1893430 + ... + 1893469.

It is an arithmetic number, because the mean of its divisors is an integer number (13254150).

Almost surely, 275737980 is an apocalyptic number.

It is an amenable number.

75737980 is an abundant number, since it is smaller than the sum of its proper divisors (83311820).

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

75737980 is a wasteful number, since it uses less digits than its factorization.

75737980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3786908 (or 3786906 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 46.

The square root of 75737980 is about 8702.7570344116. The cubic root of 75737980 is about 423.0950126277.

The spelling of 75737980 in words is "seventy-five million, seven hundred thirty-seven thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 3786899 7573798 15147596 18934495 37868990 75737980