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1997062914 = 237211617521
BaseRepresentation
bin111011100001000…
…1100001100000010
312011011211022022010
41313002030030002
513042222003124
6530055553350
7100326516600
oct16702141402
95134738263
101997062914
11935320a20
1247898b856
1325a989542
1414d332870
15ba4d2529
hex7708c302

1997062914 has 48 divisors (see below), whose sum is σ = 5068620576. Its totient is φ = 518716800.

The previous prime is 1997062909. The next prime is 1997063017. The reversal of 1997062914 is 4192607991.

It is a Curzon number.

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, 305527 + ... + 311994.

It is an arithmetic number, because the mean of its divisors is an integer number (105596262).

Almost surely, 21997062914 is an apocalyptic number.

1997062914 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1997062914 is an abundant number, since it is smaller than the sum of its proper divisors (3071557662).

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

1997062914 is a wasteful number, since it uses less digits than its factorization.

1997062914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617551 (or 617544 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 1997062914 is about 44688.5098655124. The cubic root of 1997062914 is about 1259.3039983278.

The spelling of 1997062914 in words is "one billion, nine hundred ninety-seven million, sixty-two thousand, nine hundred fourteen".

Divisors: 1 2 3 6 7 11 14 21 22 33 42 49 66 77 98 147 154 231 294 462 539 1078 1617 3234 617521 1235042 1852563 3705126 4322647 6792731 8645294 12967941 13585462 20378193 25935882 30258529 40756386 47549117 60517058 90775587 95098234 142647351 181551174 285294702 332843819 665687638 998531457 1997062914