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12490723 = 71784389
BaseRepresentation
bin101111101001…
…011111100011
3212111121001101
4233221133203
511144200343
61123415231
7211112050
oct57513743
925447041
1012490723
117061513
124224517
13278447b
141932027
15116ae4d
hexbe97e3

12490723 has 4 divisors (see below), whose sum is σ = 14275120. Its totient is φ = 10706328.

The previous prime is 12490711. The next prime is 12490727. The reversal of 12490723 is 32709421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32709421 = 308910589.

It is a cyclic number.

It is not a de Polignac number, because 12490723 - 217 = 12359651 is a prime.

It is a super-2 number, since 2×124907232 = 312036322125458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12490691 and 12490700.

It is not an unprimeable number, because it can be changed into a prime (12490727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 892188 + ... + 892201.

It is an arithmetic number, because the mean of its divisors is an integer number (3568780).

Almost surely, 212490723 is an apocalyptic number.

12490723 is a deficient number, since it is larger than the sum of its proper divisors (1784397).

12490723 is an equidigital number, since it uses as much as digits as its factorization.

12490723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784396.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 12490723 is about 3534.2216964984. The cubic root of 12490723 is about 232.0220141120.

The spelling of 12490723 in words is "twelve million, four hundred ninety thousand, seven hundred twenty-three".

Divisors: 1 7 1784389 12490723