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2989420 = 2257131163
BaseRepresentation
bin1011011001110101101100
312121212201021
423121311230
51231130140
6144023524
734260340
oct13316554
95555637
102989420
111761aa5
121001ba4
138088b5
1457b620
153e0b4a
hex2d9d6c

2989420 has 48 divisors (see below), whose sum is σ = 7273728. Its totient is φ = 1010880.

The previous prime is 2989417. The next prime is 2989429. The reversal of 2989420 is 249892.

It is not an unprimeable number, because it can be changed into a prime (2989429) 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 15 ways as a sum of consecutive naturals, for example, 18259 + ... + 18421.

It is an arithmetic number, because the mean of its divisors is an integer number (151536).

22989420 is an apocalyptic number.

2989420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2989420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3636864).

2989420 is an abundant number, since it is smaller than the sum of its proper divisors (4284308).

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

2989420 is a wasteful number, since it uses less digits than its factorization.

2989420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 2989420 is about 1728.9939271148. The cubic root of 2989420 is about 144.0552128809.

The spelling of 2989420 in words is "two million, nine hundred eighty-nine thousand, four hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 131 140 163 262 326 524 652 655 815 917 1141 1310 1630 1834 2282 2620 3260 3668 4564 4585 5705 9170 11410 18340 21353 22820 42706 85412 106765 149471 213530 298942 427060 597884 747355 1494710 2989420