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2146391 = 13414027
BaseRepresentation
bin1000001100000001010111
311001001021222
420030001113
51022141031
6114000555
724146462
oct10140127
94031258
102146391
111236685
1287615b
135a1c70
143dc2d9
152c5e7b
hex20c057

2146391 has 8 divisors (see below), whose sum is σ = 2368464. Its totient is φ = 1932480.

The previous prime is 2146387. The next prime is 2146393. The reversal of 2146391 is 1936412.

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 2146391 - 22 = 2146387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2146391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2146393) 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, 1481 + ... + 2546.

It is an arithmetic number, because the mean of its divisors is an integer number (296058).

22146391 is an apocalyptic number.

2146391 is a deficient number, since it is larger than the sum of its proper divisors (222073).

2146391 is a wasteful number, since it uses less digits than its factorization.

2146391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4081.

The product of its digits is 1296, while the sum is 26.

The square root of 2146391 is about 1465.0566541946. The cubic root of 2146391 is about 128.9940305312.

The spelling of 2146391 in words is "two million, one hundred forty-six thousand, three hundred ninety-one".

Divisors: 1 13 41 533 4027 52351 165107 2146391