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2070970991 = 17232421547
BaseRepresentation
bin111101101110000…
…1000001001101111
312100022220020010022
41323130020021233
513220132032431
6541300032355
7102214651205
oct17334101157
95308806108
102070970991
11973011181
124996926bb
13270095b2b
14159091075
15c1c3107b
hex7b70826f

2070970991 has 24 divisors (see below), whose sum is σ = 2301922224. Its totient is φ = 1856574720.

The previous prime is 2070970969. The next prime is 2070971003. The reversal of 2070970991 is 1990790702.

It is not a de Polignac number, because 2070970991 - 26 = 2070970927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2070970901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3785780 + ... + 3786326.

It is an arithmetic number, because the mean of its divisors is an integer number (95913426).

Almost surely, 22070970991 is an apocalyptic number.

2070970991 is a deficient number, since it is larger than the sum of its proper divisors (230951233).

2070970991 is a wasteful number, since it uses less digits than its factorization.

2070970991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031 (or 1008 counting only the distinct ones).

The product of its (nonzero) digits is 71442, while the sum is 44.

The square root of 2070970991 is about 45507.9222883225. The cubic root of 2070970991 is about 1274.6511394132.

The spelling of 2070970991 in words is "two billion, seventy million, nine hundred seventy thousand, nine hundred ninety-one".

Divisors: 1 17 23 391 421 529 547 7157 8993 9299 9683 12581 164611 213877 222709 230287 289363 3786053 3914879 4919171 5296601 90042217 121821823 2070970991