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14721980 = 2257138089
BaseRepresentation
bin111000001010…
…001110111100
31000200221202112
4320022032330
512232100410
61243313152
7236064140
oct70121674
930627675
1014721980
118345929
124b1b7b8
133085c40
141d53220
15145c105
hexe0a3bc

14721980 has 48 divisors (see below), whose sum is σ = 38055360. Its totient is φ = 4658688.

The previous prime is 14721961. The next prime is 14721989. The reversal of 14721980 is 8912741.

14721980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14721989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2225 + ... + 5864.

It is an arithmetic number, because the mean of its divisors is an integer number (792820).

Almost surely, 214721980 is an apocalyptic number.

14721980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14721980 is an abundant number, since it is smaller than the sum of its proper divisors (23333380).

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

14721980 is a wasteful number, since it uses less digits than its factorization.

14721980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8118 (or 8116 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 14721980 is about 3836.9232465610. The cubic root of 14721980 is about 245.0880150245.

The spelling of 14721980 in words is "fourteen million, seven hundred twenty-one thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 13 14 20 26 28 35 52 65 70 91 130 140 182 260 364 455 910 1820 8089 16178 32356 40445 56623 80890 105157 113246 161780 210314 226492 283115 420628 525785 566230 736099 1051570 1132460 1472198 2103140 2944396 3680495 7360990 14721980