Search a number
-
+
30250983 = 3721910831
BaseRepresentation
bin111001101100…
…1011111100111
32002220220112210
41303121133213
530221012413
63000214503
7515062200
oct163313747
962826483
1030250983
1116092014
12a16a433
1363622b9
1440365a7
1529c83c3
hex1cd97e7

30250983 has 24 divisors (see below), whose sum is σ = 49393920. Its totient is φ = 16374960.

The previous prime is 30250967. The next prime is 30250999. The reversal of 30250983 is 38905203.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30250967) and next prime (30250999).

It is not a de Polignac number, because 30250983 - 24 = 30250967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30250983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30250943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2623 + ... + 8208.

It is an arithmetic number, because the mean of its divisors is an integer number (2058080).

Almost surely, 230250983 is an apocalyptic number.

30250983 is a deficient number, since it is larger than the sum of its proper divisors (19142937).

30250983 is a wasteful number, since it uses less digits than its factorization.

30250983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10867 (or 10860 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 30250983 is about 5500.0893629104. The cubic root of 30250983 is about 311.5873592459.

The spelling of 30250983 in words is "thirty million, two hundred fifty thousand, nine hundred eighty-three".

Divisors: 1 3 7 19 21 49 57 133 147 399 931 2793 10831 32493 75817 205789 227451 530719 617367 1440523 1592157 4321569 10083661 30250983