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2281407 = 31395471
BaseRepresentation
bin1000101100111110111111
311021220111120
420230332333
51041001112
6120522023
725251222
oct10547677
94256446
102281407
111319067
12920313
1361b55b
144355b9
15300e8c
hex22cfbf

2281407 has 8 divisors (see below), whose sum is σ = 3064320. Its totient is φ = 1509720.

The previous prime is 2281403. The next prime is 2281429. The reversal of 2281407 is 7041822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2281407 - 22 = 2281403 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2281403) 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, 2319 + ... + 3152.

It is an arithmetic number, because the mean of its divisors is an integer number (383040).

22281407 is an apocalyptic number.

2281407 is a deficient number, since it is larger than the sum of its proper divisors (782913).

2281407 is a wasteful number, since it uses less digits than its factorization.

2281407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5613.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 2281407 is about 1510.4327194549. The cubic root of 2281407 is about 131.6439555622.

The spelling of 2281407 in words is "two million, two hundred eighty-one thousand, four hundred seven".

Divisors: 1 3 139 417 5471 16413 760469 2281407