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2072156492 = 2272194711839
BaseRepresentation
bin111101110000010…
…1001100101001100
312100102010110022202
41323200221211030
513220433001432
6541341301032
7102231016400
oct17340514514
95312113282
102072156492
1197375092a
12499b64778
132703bc603
141592bd100
15c1db7462
hex7b82994c

2072156492 has 72 divisors (see below), whose sum is σ = 4535193600. Its totient is φ = 823356576.

The previous prime is 2072156483. The next prime is 2072156507. The reversal of 2072156492 is 2946512702.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169109 + ... + 180947.

It is an arithmetic number, because the mean of its divisors is an integer number (62988800).

Almost surely, 22072156492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2072156492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2267596800).

2072156492 is an abundant number, since it is smaller than the sum of its proper divisors (2463037108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2072156492 is a wasteful number, since it uses less digits than its factorization.

2072156492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11923 (or 11914 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 2072156492 is about 45520.9456404412. The cubic root of 2072156492 is about 1274.8943122955.

The spelling of 2072156492 in words is "two billion, seventy-two million, one hundred fifty-six thousand, four hundred ninety-two".

Divisors: 1 2 4 7 14 19 28 38 47 49 76 94 98 133 188 196 266 329 532 658 893 931 1316 1786 1862 2303 3572 3724 4606 6251 9212 11839 12502 23678 25004 43757 47356 82873 87514 165746 175028 224941 331492 449882 556433 580111 899764 1112866 1160222 1574587 2225732 2320444 3149174 3895031 6298348 7790062 10572227 11022109 15580124 21144454 22044218 27265217 42288908 44088436 54530434 74005589 109060868 148011178 296022356 518039123 1036078246 2072156492