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2970688945 = 57281114951
BaseRepresentation
bin1011000100010001…
…0001110110110001
321200000212122010111
42301010101312301
522040444021240
61210440101321
7133421303500
oct26104216661
97600778114
102970688945
111294970634
126aaa64841
133845c1013
14202776837
15125c041ea
hexb1111db1

2970688945 has 24 divisors (see below), whose sum is σ = 4152230208. Its totient is φ = 2034396000.

The previous prime is 2970688891. The next prime is 2970688949. The reversal of 2970688945 is 5498860792.

It is not a de Polignac number, because 2970688945 - 29 = 2970688433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2970688945.

It is not an unprimeable number, because it can be changed into a prime (2970688949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191220 + ... + 206170.

It is an arithmetic number, because the mean of its divisors is an integer number (173009592).

Almost surely, 22970688945 is an apocalyptic number.

It is an amenable number.

2970688945 is a deficient number, since it is larger than the sum of its proper divisors (1181541263).

2970688945 is a wasteful number, since it uses less digits than its factorization.

2970688945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15781 (or 15774 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 58.

The square root of 2970688945 is about 54504.0268695809. The cubic root of 2970688945 is about 1437.5370941405.

The spelling of 2970688945 in words is "two billion, nine hundred seventy million, six hundred eighty-eight thousand, nine hundred forty-five".

Divisors: 1 5 7 35 49 245 811 4055 5677 14951 28385 39739 74755 104657 198695 523285 732599 3662995 12125261 60626305 84876827 424384135 594137789 2970688945