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8720083245 = 352572837993
BaseRepresentation
bin10000001111100000…
…11110100100101101
3211111201101010102010
420013300132210231
5120324320130440
64001141351433
7426043325136
oct100760364455
924451333363
108720083245
113775294675
121834408579
13a8c794793
145ca18cc8d
15360838580
hex207c1e92d

8720083245 has 32 divisors (see below), whose sum is σ = 14057672832. Its totient is φ = 4615667712.

The previous prime is 8720083243. The next prime is 8720083247. The reversal of 8720083245 is 5423800278.

It is an interprime number because it is at equal distance from previous prime (8720083243) and next prime (8720083247).

It is not a de Polignac number, because 8720083245 - 21 = 8720083243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8720083243) 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, 1086969 + ... + 1094961.

It is an arithmetic number, because the mean of its divisors is an integer number (439302276).

Almost surely, 28720083245 is an apocalyptic number.

It is an amenable number.

8720083245 is a deficient number, since it is larger than the sum of its proper divisors (5337589587).

8720083245 is a wasteful number, since it uses less digits than its factorization.

8720083245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8541.

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 8720083245 is about 93381.3859663691. The cubic root of 8720083245 is about 2058.2914828901.

The spelling of 8720083245 in words is "eight billion, seven hundred twenty million, eighty-three thousand, two hundred forty-five".

Divisors: 1 3 5 15 257 283 771 849 1285 1415 3855 4245 7993 23979 39965 72731 119895 218193 363655 1090965 2054201 2262019 6162603 6786057 10271005 11310095 30813015 33930285 581338883 1744016649 2906694415 8720083245