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121200048 = 24322929023
BaseRepresentation
bin1110011100101…
…01110110110000
322110001121012200
413032111312300
5222011400143
620005423200
73001116624
oct716256660
9273047180
10121200048
1162461432
123470ab00
131c157208
141214d184
15a9911d3
hex7395db0

121200048 has 60 divisors (see below), whose sum is σ = 350900160. Its totient is φ = 39005568.

The previous prime is 121200047. The next prime is 121200061. The reversal of 121200048 is 840002121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 121200048.

It is not an unprimeable number, because it can be changed into a prime (121200047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10336 + ... + 18687.

It is an arithmetic number, because the mean of its divisors is an integer number (5848336).

Almost surely, 2121200048 is an apocalyptic number.

121200048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

121200048 is an abundant number, since it is smaller than the sum of its proper divisors (229700112).

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

121200048 is a wasteful number, since it uses less digits than its factorization.

121200048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29066 (or 29057 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 121200048 is about 11009.0893356354. The cubic root of 121200048 is about 494.8811713541.

Adding to 121200048 its reverse (840002121), we get a palindrome (961202169).

The spelling of 121200048 in words is "one hundred twenty-one million, two hundred thousand, forty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 29 36 48 58 72 87 116 144 174 232 261 348 464 522 696 1044 1392 2088 4176 29023 58046 87069 116092 174138 232184 261207 348276 464368 522414 696552 841667 1044828 1393104 1683334 2089656 2525001 3366668 4179312 5050002 6733336 7575003 10100004 13466672 15150006 20200008 30300012 40400016 60600024 121200048