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1113212080 = 245139100109
BaseRepresentation
bin100001001011010…
…0100010010110000
32212120201000220001
41002112210102300
54234440241310
6302243555344
736405101161
oct10226442260
92776630801
101113212080
11521419792
1227098bb54
13149828596
14a7bbb768
1567ae593a
hex425a44b0

1113212080 has 40 divisors (see below), whose sum is σ = 2606864400. Its totient is φ = 442076928.

The previous prime is 1113212047. The next prime is 1113212117. The reversal of 1113212080 is 802123111.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×11132120802 = 2478482270115852800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38935 + ... + 61174.

It is an arithmetic number, because the mean of its divisors is an integer number (65171610).

Almost surely, 21113212080 is an apocalyptic number.

1113212080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1113212080 is an abundant number, since it is smaller than the sum of its proper divisors (1493652320).

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

1113212080 is a wasteful number, since it uses less digits than its factorization.

1113212080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100261 (or 100255 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 1113212080 is about 33364.8329832475. The cubic root of 1113212080 is about 1036.3965774993.

Adding to 1113212080 its reverse (802123111), we get a palindrome (1915335191).

The spelling of 1113212080 in words is "one billion, one hundred thirteen million, two hundred twelve thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 139 278 556 695 1112 1390 2224 2780 5560 11120 100109 200218 400436 500545 800872 1001090 1601744 2002180 4004360 8008720 13915151 27830302 55660604 69575755 111321208 139151510 222642416 278303020 556606040 1113212080