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10621485 = 325724817
BaseRepresentation
bin101000100001…
…001000101101
3201222121221100
4220201020231
510204341420
61015353313
7156165300
oct50411055
921877840
1010621485
115aa5096
123682839
13227b704
1415a6b37
15dec190
hexa2122d

10621485 has 36 divisors (see below), whose sum is σ = 21420828. Its totient is φ = 4854528.

The previous prime is 10621477. The next prime is 10621487. The reversal of 10621485 is 58412601.

It can be written as a sum of positive squares in 2 ways, for example, as 2223081 + 8398404 = 1491^2 + 2898^2 .

It is not a de Polignac number, because 10621485 - 23 = 10621477 is a prime.

It is a super-2 number, since 2×106214852 = 225631887210450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10621487) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 204 + ... + 4613.

It is an arithmetic number, because the mean of its divisors is an integer number (595023).

Almost surely, 210621485 is an apocalyptic number.

10621485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10621485 is an abundant number, since it is smaller than the sum of its proper divisors (10799343).

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

10621485 is a wasteful number, since it uses less digits than its factorization.

10621485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4842 (or 4832 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 10621485 is about 3259.0619816137. The cubic root of 10621485 is about 219.8172380222.

It can be divided in two parts, 1062148 and 5, that added together give a triangular number (1062153 = T1457).

The spelling of 10621485 in words is "ten million, six hundred twenty-one thousand, four hundred eighty-five".

Divisors: 1 3 5 7 9 15 21 35 45 49 63 105 147 245 315 441 735 2205 4817 14451 24085 33719 43353 72255 101157 168595 216765 236033 303471 505785 708099 1180165 1517355 2124297 3540495 10621485