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15030938 = 2131930427
BaseRepresentation
bin111001010101…
…101010011010
31001021122120102
4321111222122
512321442223
61254055402
7241521656
oct71255232
931248512
1015030938
118536a6a
12504a562
133163760
141dd3a66
1514bd928
hexe55a9a

15030938 has 16 divisors (see below), whose sum is σ = 25559520. Its totient is φ = 6572016.

The previous prime is 15030931. The next prime is 15030947. The reversal of 15030938 is 83903051.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15030938.

It is not an unprimeable number, because it can be changed into a prime (15030931) 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 7 ways as a sum of consecutive naturals, for example, 14720 + ... + 15707.

It is an arithmetic number, because the mean of its divisors is an integer number (1597470).

Almost surely, 215030938 is an apocalyptic number.

15030938 is a deficient number, since it is larger than the sum of its proper divisors (10528582).

15030938 is a wasteful number, since it uses less digits than its factorization.

15030938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30461.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 15030938 is about 3876.9753674740. The cubic root of 15030938 is about 246.7906458160.

Adding to 15030938 its reverse (83903051), we get a palindrome (98933989).

The spelling of 15030938 in words is "fifteen million, thirty thousand, nine hundred thirty-eight".

Divisors: 1 2 13 19 26 38 247 494 30427 60854 395551 578113 791102 1156226 7515469 15030938