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4987980 = 223453079
BaseRepresentation
bin10011000001110001001100
3100101102020000
4103001301030
52234103410
6254524300
760253134
oct23016114
910342200
104987980
1128a75a8
121806690
13105848a
1493bac4
15687dc0
hex4c1c4c

4987980 has 60 divisors (see below), whose sum is σ = 15652560. Its totient is φ = 1329696.

The previous prime is 4987979. The next prime is 4987999. The reversal of 4987980 is 897894.

4987980 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 81 + ... + 3159.

It is an arithmetic number, because the mean of its divisors is an integer number (260876).

Almost surely, 24987980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4987980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7826280).

4987980 is an abundant number, since it is smaller than the sum of its proper divisors (10664580).

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

4987980 is a wasteful number, since it uses less digits than its factorization.

4987980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3100 (or 3089 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 4987980 is about 2233.3786065063. The cubic root of 4987980 is about 170.8604586447.

The spelling of 4987980 in words is "four million, nine hundred eighty-seven thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 81 90 108 135 162 180 270 324 405 540 810 1620 3079 6158 9237 12316 15395 18474 27711 30790 36948 46185 55422 61580 83133 92370 110844 138555 166266 184740 249399 277110 332532 415665 498798 554220 831330 997596 1246995 1662660 2493990 4987980