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10720725 = 352223641
BaseRepresentation
bin101000111001…
…010111010101
3202011200001220
4220321113111
510221030400
61021440553
7160060521
oct50712725
922150056
1010720725
116062704
123710159
1322b4932
1415d0d81
15e1b7a0
hexa395d5

10720725 has 24 divisors (see below), whose sum is σ = 17832192. Its totient is φ = 5683200.

The previous prime is 10720711. The next prime is 10720733. The reversal of 10720725 is 52702701.

It is not a de Polignac number, because 10720725 - 24 = 10720709 is a prime.

It is a super-2 number, since 2×107207252 = 229867889051250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10720695 and 10720704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16405 + ... + 17045.

It is an arithmetic number, because the mean of its divisors is an integer number (743008).

Almost surely, 210720725 is an apocalyptic number.

10720725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10720725 is a deficient number, since it is larger than the sum of its proper divisors (7111467).

10720725 is a wasteful number, since it uses less digits than its factorization.

10720725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877 (or 872 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 10720725 is about 3274.2518229360. The cubic root of 10720725 is about 220.4997249085.

The spelling of 10720725 in words is "ten million, seven hundred twenty thousand, seven hundred twenty-five".

Divisors: 1 3 5 15 25 75 223 641 669 1115 1923 3205 3345 5575 9615 16025 16725 48075 142943 428829 714715 2144145 3573575 10720725