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30252612 = 22313533659
BaseRepresentation
bin111001101100…
…1111001000100
32002220222210010
41303121321010
530221040422
63000230220
7515100015
oct163317104
962828703
1030252612
1116093265
12a16b370
136362c70
14403700c
1529c8b0c
hex1cd9e44

30252612 has 48 divisors (see below), whose sum is σ = 77474880. Its totient is φ = 9130368.

The previous prime is 30252589. The next prime is 30252619. The reversal of 30252612 is 21625203.

It is not an unprimeable number, because it can be changed into a prime (30252619) 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 15 ways as a sum of consecutive naturals, for example, 6439 + ... + 10097.

It is an arithmetic number, because the mean of its divisors is an integer number (1614060).

Almost surely, 230252612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30252612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38737440).

30252612 is an abundant number, since it is smaller than the sum of its proper divisors (47222268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30252612 is a wasteful number, since it uses less digits than its factorization.

30252612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3732 (or 3730 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 30252612 is about 5500.2374494198. The cubic root of 30252612 is about 311.5929520856.

Adding to 30252612 its reverse (21625203), we get a palindrome (51877815).

The spelling of 30252612 in words is "thirty million, two hundred fifty-two thousand, six hundred twelve".

Divisors: 1 2 3 4 6 12 13 26 39 52 53 78 106 156 159 212 318 636 689 1378 2067 2756 3659 4134 7318 8268 10977 14636 21954 43908 47567 95134 142701 190268 193927 285402 387854 570804 581781 775708 1163562 2327124 2521051 5042102 7563153 10084204 15126306 30252612