Search a number
-
+
1013888 = 27892
BaseRepresentation
bin11110111100010000000
31220111210102
43313202000
5224421023
633421532
711421641
oct3674200
91814712
101013888
11632827
1240a8a8
13296645
141c56c8
15150628
hexf7880

1013888 has 24 divisors (see below), whose sum is σ = 2042805. Its totient is φ = 501248.

The previous prime is 1013879. The next prime is 1013891. The reversal of 1013888 is 8883101.

Adding to 1013888 its reverse (8883101), we get a palindrome (9896989).

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 906304 + 107584 = 952^2 + 328^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=712.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1013888.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 11348 + ... + 11436.

21013888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1013888

1013888 is an abundant number, since it is smaller than the sum of its proper divisors (1028917).

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

1013888 is an frugal number, since it uses more digits than its factorization.

1013888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 1013888 is about 1006.9200564096. The cubic root of 1013888 is about 100.4608066441.

The spelling of 1013888 in words is "one million, thirteen thousand, eight hundred eighty-eight".

Divisors: 1 2 4 8 16 32 64 89 128 178 356 712 1424 2848 5696 7921 11392 15842 31684 63368 126736 253472 506944 1013888