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1213038483020 = 225713666504661
BaseRepresentation
bin10001101001101110101…
…110100101011001001100
311021222001201220200012222
4101221232232211121030
5124333300322424040
62325132344314512
7153432136660040
oct21515656453114
94258051820188
101213038483020
114284a06663a1
12177118172a38
138a509941910
14429d6030020
15218496debb5
hex11a6eba564c

1213038483020 has 48 divisors (see below), whose sum is σ = 3135237930048. Its totient is φ = 383906684160.

The previous prime is 1213038483017. The next prime is 1213038483029. The reversal of 1213038483020 is 203848303121.

It is a super-2 number, since 2×12130384830202 (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (1213038483029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333250511 + ... + 333254150.

It is an arithmetic number, because the mean of its divisors is an integer number (65317456876).

Almost surely, 21213038483020 is an apocalyptic number.

1213038483020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213038483020 is an abundant number, since it is smaller than the sum of its proper divisors (1922199447028).

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

1213038483020 is a wasteful number, since it uses less digits than its factorization.

1213038483020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666504690 (or 666504688 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 1213038483020 in words is "one trillion, two hundred thirteen billion, thirty-eight million, four hundred eighty-three thousand, twenty".

Divisors: 1 2 4 5 7 10 13 14 20 26 28 35 52 65 70 91 130 140 182 260 364 455 910 1820 666504661 1333009322 2666018644 3332523305 4665532627 6665046610 8664560593 9331065254 13330093220 17329121186 18662130508 23327663135 34658242372 43322802965 46655326270 60651924151 86645605930 93310652540 121303848302 173291211860 242607696604 303259620755 606519241510 1213038483020