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1213032422240 = 25541184913479
BaseRepresentation
bin10001101001101110010…
…111011101101101100000
311021222001022111202101122
4101221232113131231200
5124333242300002430
62325132010351412
7153432034315112
oct21515627355540
94258038452348
101213032422240
114284981a6891
1217711612b568
138a5085cc062
14429d52d33b2
1521848de3ee5
hex11a6e5ddb60

1213032422240 has 48 divisors (see below), whose sum is σ = 2935686408480. Its totient is φ = 473378503680.

The previous prime is 1213032422237. The next prime is 1213032422249. The reversal of 1213032422240 is 422242303121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213032422249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92450180 + ... + 92463299.

It is an arithmetic number, because the mean of its divisors is an integer number (61160133510).

Almost surely, 21213032422240 is an apocalyptic number.

1213032422240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213032422240 is an abundant number, since it is smaller than the sum of its proper divisors (1722653986240).

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

1213032422240 is a wasteful number, since it uses less digits than its factorization.

1213032422240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184913535 (or 184913527 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 1213032422240 its reverse (422242303121), we get a palindrome (1635274725361).

The spelling of 1213032422240 in words is "one trillion, two hundred thirteen billion, thirty-two million, four hundred twenty-two thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 41 80 82 160 164 205 328 410 656 820 1312 1640 3280 6560 184913479 369826958 739653916 924567395 1479307832 1849134790 2958615664 3698269580 5917231328 7396539160 7581452639 14793078320 15162905278 29586156640 30325810556 37907263195 60651621112 75814526390 121303242224 151629052780 242606484448 303258105560 606516211120 1213032422240