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1213032115424 = 25612772243431
BaseRepresentation
bin10001101001101110010…
…110010010110011100000
311021222001021221011112002
4101221232112102303200
5124333242210143144
62325132000023132
7153432031566443
oct21515626226340
94258037834462
101213032115424
11428498007318
12177116001aa8
138a5085224cc
14429d525365a
1521848d8314e
hex11a6e592ce0

1213032115424 has 48 divisors (see below), whose sum is σ = 2436071018976. Its totient is φ = 594419212800.

The previous prime is 1213032115397. The next prime is 1213032115441. The reversal of 1213032115424 is 4245112303121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 581012 + ... + 1662419.

It is an arithmetic number, because the mean of its divisors is an integer number (50751479562).

Almost surely, 21213032115424 is an apocalyptic number.

It is an amenable number.

1213032115424 is an abundant number, since it is smaller than the sum of its proper divisors (1223038903552).

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

1213032115424 is a wasteful number, since it uses less digits than its factorization.

1213032115424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2243779 (or 2243771 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 1213032115424 its reverse (4245112303121), we get a palindrome (5458144418545).

The spelling of 1213032115424 in words is "one trillion, two hundred thirteen billion, thirty-two million, one hundred fifteen thousand, four hundred twenty-four".

Divisors: 1 2 4 8 16 32 61 122 244 277 488 554 976 1108 1952 2216 4432 8864 16897 33794 67588 135176 270352 540704 2243431 4486862 8973724 17947448 35894896 71789792 136849291 273698582 547397164 621430387 1094794328 1242860774 2189588656 2485721548 4379177312 4971443096 9942886192 19885772384 37907253607 75814507214 151629014428 303258028856 606516057712 1213032115424