Search a number
-
+
30166457 = 46165437
BaseRepresentation
bin111001100010…
…0110110111001
32002202121121012
41303010312321
530210311312
62554323305
7514260566
oct163046671
962677535
1030166457
1116034562
12a129535
136332999
14401386d
1529ad322
hex1cc4db9

30166457 has 4 divisors (see below), whose sum is σ = 30232356. Its totient is φ = 30100560.

The previous prime is 30166453. The next prime is 30166463. The reversal of 30166457 is 75466103.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10310521 + 19855936 = 3211^2 + 4456^2 .

It is a cyclic number.

It is not a de Polignac number, because 30166457 - 22 = 30166453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30166453) 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, 32258 + ... + 33179.

It is an arithmetic number, because the mean of its divisors is an integer number (7558089).

Almost surely, 230166457 is an apocalyptic number.

It is an amenable number.

30166457 is a deficient number, since it is larger than the sum of its proper divisors (65899).

30166457 is an equidigital number, since it uses as much as digits as its factorization.

30166457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65898.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 30166457 is about 5492.3999308135. The cubic root of 30166457 is about 311.2968805156.

The spelling of 30166457 in words is "thirty million, one hundred sixty-six thousand, four hundred fifty-seven".

Divisors: 1 461 65437 30166457