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1280068002 = 23325219403
BaseRepresentation
bin100110001001100…
…0100100110100010
310022012200012012000
41030103010212202
510110144134002
6331004144430
743502253453
oct11423044642
93265605160
101280068002
115a7624044
122b8838116
131752797b5
14c201312a
15775a461c
hex4c4c49a2

1280068002 has 32 divisors (see below), whose sum is σ = 2846026560. Its totient is φ = 426474720.

The previous prime is 1280067931. The next prime is 1280068039. The reversal of 1280068002 is 2008600821.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131433 + ... + 140835.

It is an arithmetic number, because the mean of its divisors is an integer number (88938330).

Almost surely, 21280068002 is an apocalyptic number.

1280068002 is an abundant number, since it is smaller than the sum of its proper divisors (1565958558).

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

1280068002 is a wasteful number, since it uses less digits than its factorization.

1280068002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11935 (or 11929 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1280068002 is about 35778.0379842160. The cubic root of 1280068002 is about 1085.7862739878.

Adding to 1280068002 its reverse (2008600821), we get a palindrome (3288668823).

The spelling of 1280068002 in words is "one billion, two hundred eighty million, sixty-eight thousand, two".

Divisors: 1 2 3 6 9 18 27 54 2521 5042 7563 9403 15126 18806 22689 28209 45378 56418 68067 84627 136134 169254 253881 507762 23704963 47409926 71114889 142229778 213344667 426689334 640034001 1280068002