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1064700880 = 24513308761
BaseRepresentation
bin111111011101100…
…000101111010000
32202012102102000221
4333131200233100
54140030412010
6253352122424
735245544125
oct7735405720
92665372027
101064700880
114a6aa5591
12258696414
1313c771a29
14a159074c
1563711dda
hex3f760bd0

1064700880 has 20 divisors (see below), whose sum is σ = 2475429732. Its totient is φ = 425880320.

The previous prime is 1064700869. The next prime is 1064700883. The reversal of 1064700880 is 880074601.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 735060544 + 329640336 = 27112^2 + 18156^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-3 number, since 3×10647008803 (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1064700883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6654301 + ... + 6654460.

Almost surely, 21064700880 is an apocalyptic number.

1064700880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1064700880 is an abundant number, since it is smaller than the sum of its proper divisors (1410728852).

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

1064700880 is a wasteful number, since it uses less digits than its factorization.

1064700880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13308774 (or 13308768 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 1064700880 is about 32629.7545194566. The cubic root of 1064700880 is about 1021.1178568547.

The spelling of 1064700880 in words is "one billion, sixty-four million, seven hundred thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 13308761 26617522 53235044 66543805 106470088 133087610 212940176 266175220 532350440 1064700880