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2159390 = 25215939
BaseRepresentation
bin1000001111001100011110
311001201010102
420033030132
51023100030
6114141102
724232412
oct10171436
94051112
102159390
111245422
12881792
135a7b5c
14402d42
152c9c45
hex20f31e

2159390 has 8 divisors (see below), whose sum is σ = 3886920. Its totient is φ = 863752.

The previous prime is 2159383. The next prime is 2159419. The reversal of 2159390 is 939512.

2159390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107960 + ... + 107979.

It is an arithmetic number, because the mean of its divisors is an integer number (485865).

22159390 is an apocalyptic number.

2159390 is a deficient number, since it is larger than the sum of its proper divisors (1727530).

2159390 is a wasteful number, since it uses less digits than its factorization.

2159390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215946.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 2159390 is about 1469.4863048018. The cubic root of 2159390 is about 129.2539116899.

The spelling of 2159390 in words is "two million, one hundred fifty-nine thousand, three hundred ninety".

Divisors: 1 2 5 10 215939 431878 1079695 2159390