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10678521 = 37272643
BaseRepresentation
bin101000101111…
…000011111001
3202002112011210
4220233003321
510213203041
61020513333
7156523500
oct50570371
922075153
1010678521
116033a27
1236ab849
13229b669
1415bd837
15e0e016
hexa2f0f9

10678521 has 12 divisors (see below), whose sum is σ = 16562832. Its totient is φ = 6101928.

The previous prime is 10678511. The next prime is 10678523. The reversal of 10678521 is 12587601.

10678521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10678521 - 25 = 10678489 is a prime.

It is a super-2 number, since 2×106785212 = 228061621494882, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10678523) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 36175 + ... + 36468.

It is an arithmetic number, because the mean of its divisors is an integer number (1380236).

Almost surely, 210678521 is an apocalyptic number.

It is an amenable number.

10678521 is a deficient number, since it is larger than the sum of its proper divisors (5884311).

10678521 is an equidigital number, since it uses as much as digits as its factorization.

10678521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72660 (or 72653 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 10678521 is about 3267.8006365138. The cubic root of 10678521 is about 220.2099992077.

The spelling of 10678521 in words is "ten million, six hundred seventy-eight thousand, five hundred twenty-one".

Divisors: 1 3 7 21 49 147 72643 217929 508501 1525503 3559507 10678521