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8445070831 = 291665117489
BaseRepresentation
bin1111101110101110…
…11000110111101111
3210210112220001022011
413313113120313233
5114243414231311
63513555102051
7416163626521
oct76727306757
923715801264
108445070831
11364402778a
1217782a1927
13a47805342
145a1841a11
15346613321
hex1f75d8def

8445070831 has 8 divisors (see below), whose sum is σ = 8737304400. Its totient is φ = 8152905600.

The previous prime is 8445070819. The next prime is 8445070877. The reversal of 8445070831 is 1380705448.

8445070831 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-8445070831 is a prime.

It is a super-2 number, since 2×84450708312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8445070801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474135 + ... + 491623.

It is an arithmetic number, because the mean of its divisors is an integer number (1092163050).

Almost surely, 28445070831 is an apocalyptic number.

8445070831 is a deficient number, since it is larger than the sum of its proper divisors (292233569).

8445070831 is a wasteful number, since it uses less digits than its factorization.

8445070831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34169.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 8445070831 is about 91897.0664983382. The cubic root of 8445070831 is about 2036.4219310710.

The spelling of 8445070831 in words is "eight billion, four hundred forty-five million, seventy thousand, eight hundred thirty-one".

Divisors: 1 29 16651 17489 482879 507181 291209339 8445070831