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2278001 = 11415051
BaseRepresentation
bin1000101100001001110001
311021201211102
420230021301
51040344001
6120454145
725235255
oct10541161
94251742
102278001
111316550
1291a355
13619b3b
14434265
152eee6b
hex22c271

2278001 has 8 divisors (see below), whose sum is σ = 2546208. Its totient is φ = 2020000.

The previous prime is 2277941. The next prime is 2278007. The reversal of 2278001 is 1008722.

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

It is a cyclic number.

It is not a de Polignac number, because 2278001 - 214 = 2261617 is a prime.

It is an Ulam number.

It is a deceptive number, since it divides R2278000.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2278007) 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, 2075 + ... + 2976.

It is an arithmetic number, because the mean of its divisors is an integer number (318276).

22278001 is an apocalyptic number.

It is an amenable number.

2278001 is a deficient number, since it is larger than the sum of its proper divisors (268207).

2278001 is a wasteful number, since it uses less digits than its factorization.

2278001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5103.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 2278001 is about 1509.3048068565. The cubic root of 2278001 is about 131.5784108301.

It can be divided in two parts, 227 and 8001, that added together give a palindrome (8228).

The spelling of 2278001 in words is "two million, two hundred seventy-eight thousand, one".

Divisors: 1 11 41 451 5051 55561 207091 2278001