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2881004 = 227214699
BaseRepresentation
bin1010111111010111101100
312102100222212
422333113230
51214143004
6141425552
733326300
oct12772754
95370885
102881004
1116985a5
12b6b2b8
1379b449
1454dd00
153bd96e
hex2bf5ec

2881004 has 18 divisors (see below), whose sum is σ = 5865300. Its totient is φ = 1234632.

The previous prime is 2880991. The next prime is 2881009. The reversal of 2881004 is 4001882.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2881009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7154 + ... + 7545.

It is an arithmetic number, because the mean of its divisors is an integer number (325850).

22881004 is an apocalyptic number.

It is an amenable number.

2881004 is an abundant number, since it is smaller than the sum of its proper divisors (2984296).

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

2881004 is a wasteful number, since it uses less digits than its factorization.

2881004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14717 (or 14708 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 2881004 is about 1697.3520554087. The cubic root of 2881004 is about 142.2922632258.

Adding to 2881004 its reverse (4001882), we get a palindrome (6882886).

The spelling of 2881004 in words is "two million, eight hundred eighty-one thousand, four".

Divisors: 1 2 4 7 14 28 49 98 196 14699 29398 58796 102893 205786 411572 720251 1440502 2881004