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1980992472 = 233471756199
BaseRepresentation
bin111011000010011…
…1000101111011000
312010001120211210120
41312010320233120
513024113224342
6524323313240
7100043105154
oct16604705730
95101524716
101980992472
11927244a68
1247351b820
132575508c4
1414b14c064
15b8daaaec
hex76138bd8

1980992472 has 32 divisors (see below), whose sum is σ = 5057856000. Its totient is φ = 646280864.

The previous prime is 1980992467. The next prime is 1980992483. The reversal of 1980992472 is 2742990891.

1980992472 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 876972 + ... + 879227.

It is an arithmetic number, because the mean of its divisors is an integer number (158058000).

Almost surely, 21980992472 is an apocalyptic number.

1980992472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1980992472 is an abundant number, since it is smaller than the sum of its proper divisors (3076863528).

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

1980992472 is a wasteful number, since it uses less digits than its factorization.

1980992472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756255 (or 1756251 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 1980992472 is about 44508.3416001989. The cubic root of 1980992472 is about 1255.9170077149.

The spelling of 1980992472 in words is "one billion, nine hundred eighty million, nine hundred ninety-two thousand, four hundred seventy-two".

Divisors: 1 2 3 4 6 8 12 24 47 94 141 188 282 376 564 1128 1756199 3512398 5268597 7024796 10537194 14049592 21074388 42148776 82541353 165082706 247624059 330165412 495248118 660330824 990496236 1980992472