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830327557 = 2633157139
BaseRepresentation
bin110001011111011…
…100101100000101
32010212102000021111
4301133130230011
53200030440212
6214220445021
726401445023
oct6137345405
92125360244
10830327557
11396775424
121b20a9771
13103040ca7
147c3c1713
154cd67ea7
hex317dcb05

830327557 has 4 divisors (see below), whose sum is σ = 833484960. Its totient is φ = 827170156.

The previous prime is 830327551. The next prime is 830327567. The reversal of 830327557 is 755723038.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 830327557 - 27 = 830327429 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (830327551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1578307 + ... + 1578832.

It is an arithmetic number, because the mean of its divisors is an integer number (208371240).

Almost surely, 2830327557 is an apocalyptic number.

It is an amenable number.

830327557 is a deficient number, since it is larger than the sum of its proper divisors (3157403).

830327557 is a wasteful number, since it uses less digits than its factorization.

830327557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3157402.

The product of its (nonzero) digits is 176400, while the sum is 40.

The square root of 830327557 is about 28815.4048557365. The cubic root of 830327557 is about 939.9032483036.

The spelling of 830327557 in words is "eight hundred thirty million, three hundred twenty-seven thousand, five hundred fifty-seven".

Divisors: 1 263 3157139 830327557