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11972950 = 2521121979
BaseRepresentation
bin101101101011…
…000101010110
3211112021210121
4231223011112
511031113300
61104342154
7203524363
oct55530526
924467717
1011972950
116838500
12401495a
1326328b2
14183946a
1510b781a
hexb6b156

11972950 has 36 divisors (see below), whose sum is σ = 24490620. Its totient is φ = 4351600.

The previous prime is 11972899. The next prime is 11972953. The reversal of 11972950 is 5927911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11972953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5061 + ... + 7039.

It is an arithmetic number, because the mean of its divisors is an integer number (680295).

Almost surely, 211972950 is an apocalyptic number.

11972950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11972950 is an abundant number, since it is smaller than the sum of its proper divisors (12517670).

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

11972950 is a wasteful number, since it uses less digits than its factorization.

11972950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013 (or 1997 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 34.

The square root of 11972950 is about 3460.1950812057. The cubic root of 11972950 is about 228.7706939782.

The spelling of 11972950 in words is "eleven million, nine hundred seventy-two thousand, nine hundred fifty".

Divisors: 1 2 5 10 11 22 25 50 55 110 121 242 275 550 605 1210 1979 3025 3958 6050 9895 19790 21769 43538 49475 98950 108845 217690 239459 478918 544225 1088450 1197295 2394590 5986475 11972950