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10201980 = 2235193881
BaseRepresentation
bin100110111010…
…101101111100
3201012022111010
4212322231330
510102430410
61002355220
7152500245
oct46725574
921168433
1010201980
115838998
1234bbb10
132162799
1414d7ccc
15d67c20
hex9bab7c

10201980 has 48 divisors (see below), whose sum is σ = 28746144. Its totient is φ = 2703360.

The previous prime is 10201963. The next prime is 10201987. The reversal of 10201980 is 8910201.

10201980 is a modest number, since divided by 1980 gives 1020 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11140 + ... + 12020.

It is an arithmetic number, because the mean of its divisors is an integer number (598878).

Almost surely, 210201980 is an apocalyptic number.

10201980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10201980 is an abundant number, since it is smaller than the sum of its proper divisors (18544164).

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

10201980 is a wasteful number, since it uses less digits than its factorization.

10201980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086 (or 1084 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 10201980 is about 3194.0538505166. The cubic root of 10201980 is about 216.8843204005.

The spelling of 10201980 in words is "ten million, two hundred one thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 193 386 579 772 881 965 1158 1762 1930 2316 2643 2895 3524 3860 4405 5286 5790 8810 10572 11580 13215 17620 26430 52860 170033 340066 510099 680132 850165 1020198 1700330 2040396 2550495 3400660 5100990 10201980