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2861248 = 261319181
BaseRepresentation
bin1010111010100011000000
312101100220011
422322203000
51213024443
6141154304
733214555
oct12724300
95340804
102861248
111684775
12b5b994
13792460
14546a2c
153b7b9d
hex2ba8c0

2861248 has 56 divisors (see below), whose sum is σ = 6471920. Its totient is φ = 1244160.

The previous prime is 2861239. The next prime is 2861249. The reversal of 2861248 is 8421682.

It is not an unprimeable number, because it can be changed into a prime (2861249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15718 + ... + 15898.

It is an arithmetic number, because the mean of its divisors is an integer number (115570).

22861248 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 2861248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3235960).

2861248 is an abundant number, since it is smaller than the sum of its proper divisors (3610672).

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

2861248 is a wasteful number, since it uses less digits than its factorization.

2861248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 215 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 2861248 is about 1691.5223912204. The cubic root of 2861248 is about 141.9662685203.

The spelling of 2861248 in words is "two million, eight hundred sixty-one thousand, two hundred forty-eight".

Divisors: 1 2 4 8 13 16 19 26 32 38 52 64 76 104 152 181 208 247 304 362 416 494 608 724 832 988 1216 1448 1976 2353 2896 3439 3952 4706 5792 6878 7904 9412 11584 13756 15808 18824 27512 37648 44707 55024 75296 89414 110048 150592 178828 220096 357656 715312 1430624 2861248