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10397980 = 225796581
BaseRepresentation
bin100111101010…
…100100011100
3201120021100101
4213222210130
510130213410
61010510444
7154244545
oct47524434
921507311
1010397980
11596217a
123595424
132200a68
1415494cc
15da5d3a
hex9ea91c

10397980 has 24 divisors (see below), whose sum is σ = 22115520. Its totient is φ = 4105920.

The previous prime is 10397977. The next prime is 10397987. The reversal of 10397980 is 8979301.

10397980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10397987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1711 + ... + 4870.

It is an arithmetic number, because the mean of its divisors is an integer number (921480).

Almost surely, 210397980 is an apocalyptic number.

10397980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10397980 is an abundant number, since it is smaller than the sum of its proper divisors (11717540).

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

10397980 is a wasteful number, since it uses less digits than its factorization.

10397980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6669 (or 6667 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 10397980 is about 3224.5898964054. The cubic root of 10397980 is about 218.2644435585.

The spelling of 10397980 in words is "ten million, three hundred ninety-seven thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 79 158 316 395 790 1580 6581 13162 26324 32905 65810 131620 519899 1039798 2079596 2599495 5198990 10397980