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12490999 = 195031307
BaseRepresentation
bin101111101001…
…100011110111
3212111121102121
4233221203313
511144202444
61123420411
7211112623
oct57514367
925447377
1012490999
117061744
124224707
132784631
141932183
15116b084
hexbe98f7

12490999 has 8 divisors (see below), whose sum is σ = 13184640. Its totient is φ = 11801016.

The previous prime is 12490997. The next prime is 12491009. The reversal of 12490999 is 99909421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12490999 - 21 = 12490997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12490993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8904 + ... + 10210.

It is an arithmetic number, because the mean of its divisors is an integer number (1648080).

Almost surely, 212490999 is an apocalyptic number.

12490999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12490999 is a deficient number, since it is larger than the sum of its proper divisors (693641).

12490999 is a wasteful number, since it uses less digits than its factorization.

12490999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 12490999 is about 3534.2607430692. The cubic root of 12490999 is about 232.0237230498.

It can be divided in two parts, 12490 and 999, that multiplied together give a triangular number (12477510 = T4995).

The spelling of 12490999 in words is "twelve million, four hundred ninety thousand, nine hundred ninety-nine".

Divisors: 1 19 503 1307 9557 24833 657421 12490999