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80297750 = 2531331797
BaseRepresentation
bin1001100100100…
…11111100010110
312121002112210202
410302103330112
5131024012000
611545020502
71663343141
oct462237426
9177075722
1080297750
1141364985
1222a84732
1313835a80
14a943058
1570b1dd5
hex4c93f16

80297750 has 64 divisors (see below), whose sum is σ = 167311872. Its totient is φ = 28656000.

The previous prime is 80297731. The next prime is 80297753. The reversal of 80297750 is 5779208.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80297753) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100352 + ... + 101148.

It is an arithmetic number, because the mean of its divisors is an integer number (2614248).

Almost surely, 280297750 is an apocalyptic number.

80297750 is an abundant number, since it is smaller than the sum of its proper divisors (87014122).

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

80297750 is a wasteful number, since it uses less digits than its factorization.

80297750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858 (or 848 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 80297750 is about 8960.9011823588. The cubic root of 80297750 is about 431.4208452820.

The spelling of 80297750 in words is "eighty million, two hundred ninety-seven thousand, seven hundred fifty".

Divisors: 1 2 5 10 13 25 26 31 50 62 65 125 130 155 250 310 325 403 650 775 797 806 1550 1594 1625 2015 3250 3875 3985 4030 7750 7970 10075 10361 19925 20150 20722 24707 39850 49414 50375 51805 99625 100750 103610 123535 199250 247070 259025 321191 518050 617675 642382 1235350 1295125 1605955 2590250 3088375 3211910 6176750 8029775 16059550 40148875 80297750