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2623881 = 313193541
BaseRepresentation
bin1010000000100110001001
311221022021210
422000212021
51132431011
6132123333
731205541
oct12004611
94838253
102623881
1115323a7
12a66549
1370b3c0
144c4321
1536c6a6
hex280989

2623881 has 16 divisors (see below), whose sum is σ = 3967040. Its totient is φ = 1529280.

The previous prime is 2623867. The next prime is 2623883. The reversal of 2623881 is 1883262.

It is not a de Polignac number, because 2623881 - 210 = 2622857 is a prime.

It is a super-2 number, since 2×26238812 = 13769503004322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2623883) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1030 + ... + 2511.

It is an arithmetic number, because the mean of its divisors is an integer number (247940).

22623881 is an apocalyptic number.

It is an amenable number.

2623881 is a deficient number, since it is larger than the sum of its proper divisors (1343159).

2623881 is a wasteful number, since it uses less digits than its factorization.

2623881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3576.

The product of its digits is 4608, while the sum is 30.

The square root of 2623881 is about 1619.8398068945. The cubic root of 2623881 is about 137.9266045337.

The spelling of 2623881 in words is "two million, six hundred twenty-three thousand, eight hundred eighty-one".

Divisors: 1 3 13 19 39 57 247 741 3541 10623 46033 67279 138099 201837 874627 2623881