[go: up one dir, main page]

Search a number
-
+
30941025 = 3521921713
BaseRepresentation
bin111011000000…
…1111101100001
32011012222002220
41312001331201
530410103100
63023101253
7523665033
oct166017541
964188086
1030941025
11165134a5
12a441829
1365443cb
144175c53
152ab2aa0
hex1d81f61

30941025 has 24 divisors (see below), whose sum is σ = 53850720. Its totient is φ = 15632640.

The previous prime is 30941023. The next prime is 30941033. The reversal of 30941025 is 52014903.

It is not a de Polignac number, because 30941025 - 21 = 30941023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30940986 and 30941004.

It is not an unprimeable number, because it can be changed into a prime (30941023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9432 + ... + 12281.

It is an arithmetic number, because the mean of its divisors is an integer number (2243780).

Almost surely, 230941025 is an apocalyptic number.

It is an amenable number.

30941025 is a deficient number, since it is larger than the sum of its proper divisors (22909695).

30941025 is a wasteful number, since it uses less digits than its factorization.

30941025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21745 (or 21740 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 30941025 is about 5562.4657302315. The cubic root of 30941025 is about 313.9387313350.

Adding to 30941025 its reverse (52014903), we get a palindrome (82955928).

The spelling of 30941025 in words is "thirty million, nine hundred forty-one thousand, twenty-five".

Divisors: 1 3 5 15 19 25 57 75 95 285 475 1425 21713 65139 108565 325695 412547 542825 1237641 1628475 2062735 6188205 10313675 30941025