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15104420 = 225773977
BaseRepresentation
bin111001100111…
…100110100100
31001102101100222
4321213212210
512331320140
61255423512
7242246132
oct71474644
931371328
1015104420
1185871a1
125084b98
13318b036
142012752
1514d55b5
hexe679a4

15104420 has 24 divisors (see below), whose sum is σ = 31792824. Its totient is φ = 6027776.

The previous prime is 15104407. The next prime is 15104429. The reversal of 15104420 is 2440151.

It can be written as a sum of positive squares in 4 ways, for example, as 1503076 + 13601344 = 1226^2 + 3688^2 .

It is not an unprimeable number, because it can be changed into a prime (15104429) 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, 14972 + ... + 15948.

It is an arithmetic number, because the mean of its divisors is an integer number (1324701).

Almost surely, 215104420 is an apocalyptic number.

15104420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15104420 is an abundant number, since it is smaller than the sum of its proper divisors (16688404).

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

15104420 is a wasteful number, since it uses less digits than its factorization.

15104420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759 (or 1757 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 15104420 is about 3886.4405308714. The cubic root of 15104420 is about 247.1921554330.

Adding to 15104420 its reverse (2440151), we get a palindrome (17544571).

The spelling of 15104420 in words is "fifteen million, one hundred four thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 773 977 1546 1954 3092 3865 3908 4885 7730 9770 15460 19540 755221 1510442 3020884 3776105 7552210 15104420