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1428571 is a prime number
BaseRepresentation
bin101011100110001011011
32200120122001
411130301123
5331203241
650341431
715066634
oct5346133
92616561
101428571
11896341
1258a877
133b0311
1429288b
151d3431
hex15cc5b

1428571 has 2 divisors, whose sum is σ = 1428572. Its totient is φ = 1428570.

The previous prime is 1428541. The next prime is 1428587. The reversal of 1428571 is 1758241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1428571 - 219 = 904283 is a prime.

It is not a weakly prime, because it can be changed into another prime (1428521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714285 + 714286.

It is an arithmetic number, because the mean of its divisors is an integer number (714286).

21428571 is an apocalyptic number.

1428571 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428571 is an equidigital number, since it uses as much as digits as its factorization.

1428571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 28.

The square root of 1428571 is about 1195.2284300501. The cubic root of 1428571 is about 112.6247767819.

The spelling of 1428571 in words is "one million, four hundred twenty-eight thousand, five hundred seventy-one".