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2988940 = 2251759149
BaseRepresentation
bin1011011001101110001100
312121212001111
423121232030
51231121230
6144021404
734256053
oct13315614
95555044
102988940
1117616a9
121001864
13808606
1457b39a
153e092a
hex2d9b8c

2988940 has 48 divisors (see below), whose sum is σ = 6804000. Its totient is φ = 1098752.

The previous prime is 2988911. The next prime is 2988949. The reversal of 2988940 is 498892.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2988893 and 2988902.

It is not an unprimeable number, because it can be changed into a prime (2988949) 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, 19986 + ... + 20134.

It is an arithmetic number, because the mean of its divisors is an integer number (141750).

22988940 is an apocalyptic number.

2988940 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 2988940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3402000).

2988940 is an abundant number, since it is smaller than the sum of its proper divisors (3815060).

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

2988940 is a wasteful number, since it uses less digits than its factorization.

2988940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 2988940 is about 1728.8551124950. The cubic root of 2988940 is about 144.0475023325.

It can be divided in two parts, 29889 and 40, that added together give a square (29929 = 1732).

The spelling of 2988940 in words is "two million, nine hundred eighty-eight thousand, nine hundred forty".

Divisors: 1 2 4 5 10 17 20 34 59 68 85 118 149 170 236 295 298 340 590 596 745 1003 1180 1490 2006 2533 2980 4012 5015 5066 8791 10030 10132 12665 17582 20060 25330 35164 43955 50660 87910 149447 175820 298894 597788 747235 1494470 2988940