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1440412012 = 221322578291
BaseRepresentation
bin101010111011010…
…1111000101101100
310201101101111211001
41111312233011230
510422221141022
6354533010044
750460204634
oct12566570554
93641344731
101440412012
1167a090956
12342483924
1319c55aa00
14d94316c4
15866c8b27
hex55daf16c

1440412012 has 36 divisors (see below), whose sum is σ = 2740489416. Its totient is φ = 662138880.

The previous prime is 1440412009. The next prime is 1440412019. The reversal of 1440412012 is 2102140441.

It is a super-3 number, since 3×14404120123 (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1440412019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169587 + ... + 177877.

It is an arithmetic number, because the mean of its divisors is an integer number (76124706).

Almost surely, 21440412012 is an apocalyptic number.

It is an amenable number.

1440412012 is a deficient number, since it is larger than the sum of its proper divisors (1300077404).

1440412012 is a wasteful number, since it uses less digits than its factorization.

1440412012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8578 (or 8563 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1440412012 is about 37952.7602685233. The cubic root of 1440412012 is about 1129.3509238695.

Adding to 1440412012 its reverse (2102140441), we get a palindrome (3542552453).

The spelling of 1440412012 in words is "one billion, four hundred forty million, four hundred twelve thousand, twelve".

Divisors: 1 2 4 13 26 52 169 257 338 514 676 1028 3341 6682 8291 13364 16582 33164 43433 86866 107783 173732 215566 431132 1401179 2130787 2802358 4261574 5604716 8523148 27700231 55400462 110800924 360103003 720206006 1440412012