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12433232020 = 2251156514691
BaseRepresentation
bin10111001010001010…
…00001000010010100
31012002111022121221211
423211011001002110
5200430401411040
65413423151204
7620051504566
oct134505010224
935074277854
1012433232020
115300265270
1224aba45504
131231b40231
1485d393336
154cb7ea8ea
hex2e5141094

12433232020 has 24 divisors (see below), whose sum is σ = 28483404768. Its totient is φ = 4521175200.

The previous prime is 12433231991. The next prime is 12433232023. The reversal of 12433232020 is 2023233421.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 12433231982 and 12433232000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12433232023) 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, 28257126 + ... + 28257565.

It is an arithmetic number, because the mean of its divisors is an integer number (1186808532).

Almost surely, 212433232020 is an apocalyptic number.

12433232020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12433232020 is an abundant number, since it is smaller than the sum of its proper divisors (16050172748).

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

12433232020 is a wasteful number, since it uses less digits than its factorization.

12433232020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56514711 (or 56514709 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 12433232020 its reverse (2023233421), we get a palindrome (14456465441).

The spelling of 12433232020 in words is "twelve billion, four hundred thirty-three million, two hundred thirty-two thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 56514691 113029382 226058764 282573455 565146910 621661601 1130293820 1243323202 2486646404 3108308005 6216616010 12433232020