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2072958381 = 321319391801
BaseRepresentation
bin111101110001110…
…1101010110101101
312100110122012022100
41323203231112231
513221134132011
6541410405313
7102240566304
oct17343552655
95313565270
102072958381
1197414934a
1249a290839
132706105c0
1415944b43b
15c1ec4d56
hex7b8ed5ad

2072958381 has 24 divisors (see below), whose sum is σ = 3241345016. Its totient is φ = 1269043200.

The previous prime is 2072958343. The next prime is 2072958383. The reversal of 2072958381 is 1838592702.

It is a happy number.

2072958381 is a `hidden beast` number, since 207 + 295 + 83 + 81 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1798281 + 2071160100 = 1341^2 + 45510^2 .

It is not a de Polignac number, because 2072958381 - 227 = 1938740653 is a prime.

It is a super-2 number, since 2×20729583812 = 8594312898716282322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2072958383) 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, 23320 + ... + 68481.

Almost surely, 22072958381 is an apocalyptic number.

It is an amenable number.

2072958381 is a deficient number, since it is larger than the sum of its proper divisors (1168386635).

2072958381 is a wasteful number, since it uses less digits than its factorization.

2072958381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92013 (or 92010 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 2072958381 is about 45529.7527008439. The cubic root of 2072958381 is about 1275.0587451595.

The spelling of 2072958381 in words is "two billion, seventy-two million, nine hundred fifty-eight thousand, three hundred eighty-one".

Divisors: 1 3 9 13 39 117 193 579 1737 2509 7527 22581 91801 275403 826209 1193413 3580239 10740717 17717593 53152779 159458337 230328709 690986127 2072958381