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14910820 = 2251939239
BaseRepresentation
bin111000111000…
…010101100100
31001001112210121
4320320111210
512304121240
61251331324
7240511531
oct70702544
931045717
1014910820
1184647a1
124bb0b44
133120b92
141da1d88
15149804a
hexe38564

14910820 has 24 divisors (see below), whose sum is σ = 32961600. Its totient is φ = 5650272.

The previous prime is 14910817. The next prime is 14910821. The reversal of 14910820 is 2801941.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14910821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19240 + ... + 19999.

It is an arithmetic number, because the mean of its divisors is an integer number (1373400).

Almost surely, 214910820 is an apocalyptic number.

14910820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14910820 is an abundant number, since it is smaller than the sum of its proper divisors (18050780).

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

14910820 is a wasteful number, since it uses less digits than its factorization.

14910820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39267 (or 39265 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 14910820 is about 3861.4530943675. The cubic root of 14910820 is about 246.1314872019.

The spelling of 14910820 in words is "fourteen million, nine hundred ten thousand, eight hundred twenty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 39239 78478 156956 196195 392390 745541 784780 1491082 2982164 3727705 7455410 14910820