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30007950 = 2352728579
BaseRepresentation
bin111001001111…
…0001010001110
32002110120011120
41302132022032
530140223300
62551101410
7513030510
oct162361216
962416146
1030007950
1115a36465
12a071866
1362a87ab
143db1bb0
15297b3a0
hex1c9e28e

30007950 has 48 divisors (see below), whose sum is σ = 85054080. Its totient is φ = 6858720.

The previous prime is 30007933. The next prime is 30007951. The reversal of 30007950 is 5970003.

It is a self number, because there is not a number n which added to its sum of digits gives 30007950.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30007951) 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, 13240 + ... + 15339.

It is an arithmetic number, because the mean of its divisors is an integer number (1771960).

Almost surely, 230007950 is an apocalyptic number.

30007950 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30007950 is an abundant number, since it is smaller than the sum of its proper divisors (55046130).

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

30007950 is a wasteful number, since it uses less digits than its factorization.

30007950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28601 (or 28596 counting only the distinct ones).

The product of its (nonzero) digits is 945, while the sum is 24.

The square root of 30007950 is about 5477.9512593670. The cubic root of 30007950 is about 310.7506953917.

Adding to 30007950 its reverse (5970003), we get a palindrome (35977953).

The spelling of 30007950 in words is "thirty million, seven thousand, nine hundred fifty".

Divisors: 1 2 3 5 6 7 10 14 15 21 25 30 35 42 50 70 75 105 150 175 210 350 525 1050 28579 57158 85737 142895 171474 200053 285790 400106 428685 600159 714475 857370 1000265 1200318 1428950 2000530 2143425 3000795 4286850 5001325 6001590 10002650 15003975 30007950