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8987272 = 237312167
BaseRepresentation
bin100010010010…
…001010001000
3121220121012221
4202102022020
54300043042
6520343424
7136250650
oct42221210
917817187
108987272
1150892a8
123014b74
131b28918
14129d360
15bc7d67
hex892288

8987272 has 48 divisors (see below), whose sum is σ = 20018880. Its totient is φ = 3705120.

The previous prime is 8987269. The next prime is 8987287. The reversal of 8987272 is 2727898.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53733 + ... + 53899.

It is an arithmetic number, because the mean of its divisors is an integer number (417060).

Almost surely, 28987272 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 8987272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10009440).

8987272 is an abundant number, since it is smaller than the sum of its proper divisors (11031608).

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

8987272 is a wasteful number, since it uses less digits than its factorization.

8987272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 207 counting only the distinct ones).

The product of its digits is 112896, while the sum is 43.

The square root of 8987272 is about 2997.8779161267. The cubic root of 8987272 is about 207.9102793520.

The spelling of 8987272 in words is "eight million, nine hundred eighty-seven thousand, two hundred seventy-two".

Divisors: 1 2 4 7 8 14 28 31 56 62 124 167 217 248 334 434 668 868 961 1169 1336 1736 1922 2338 3844 4676 5177 6727 7688 9352 10354 13454 20708 26908 36239 41416 53816 72478 144956 160487 289912 320974 641948 1123409 1283896 2246818 4493636 8987272