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15020013 = 3191012609
BaseRepresentation
bin111001010010…
…111111101101
31001021002120210
4321102333231
512321120023
61253533033
7241445061
oct71227755
931232523
1015020013
118529838
125044179
13315b7a8
141dcdaa1
1514ba593
hexe52fed

15020013 has 16 divisors (see below), whose sum is σ = 21297600. Its totient is φ = 9388800.

The previous prime is 15020011. The next prime is 15020023. The reversal of 15020013 is 31002051.

It is not a de Polignac number, because 15020013 - 21 = 15020011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15020011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4453 + ... + 7061.

It is an arithmetic number, because the mean of its divisors is an integer number (1331100).

Almost surely, 215020013 is an apocalyptic number.

It is an amenable number.

15020013 is a deficient number, since it is larger than the sum of its proper divisors (6277587).

15020013 is a wasteful number, since it uses less digits than its factorization.

15020013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 15020013 is about 3875.5661521899. The cubic root of 15020013 is about 246.7308393622.

Adding to 15020013 its reverse (31002051), we get a palindrome (46022064).

The spelling of 15020013 in words is "fifteen million, twenty thousand, thirteen".

Divisors: 1 3 19 57 101 303 1919 2609 5757 7827 49571 148713 263509 790527 5006671 15020013