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15116020 = 2251939779
BaseRepresentation
bin111001101010…
…011011110100
31001102222021121
4321222123310
512332203040
61255553324
7242325013
oct71523364
931388247
1015116020
118594987
12508b844
1331933ba
142016a7a
1514d8c4a
hexe6a6f4

15116020 has 24 divisors (see below), whose sum is σ = 33415200. Its totient is φ = 5728032.

The previous prime is 15115981. The next prime is 15116021. The reversal of 15116020 is 2061151.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 15115985 and 15116003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15116021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19510 + ... + 20269.

It is an arithmetic number, because the mean of its divisors is an integer number (1392300).

Almost surely, 215116020 is an apocalyptic number.

15116020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15116020 is an abundant number, since it is smaller than the sum of its proper divisors (18299180).

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

15116020 is a wasteful number, since it uses less digits than its factorization.

15116020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39807 (or 39805 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 15116020 is about 3887.9326125847. The cubic root of 15116020 is about 247.2554193709.

Adding to 15116020 its reverse (2061151), we get a palindrome (17177171).

The spelling of 15116020 in words is "fifteen million, one hundred sixteen thousand, twenty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 39779 79558 159116 198895 397790 755801 795580 1511602 3023204 3779005 7558010 15116020