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121387368 = 23311874261
BaseRepresentation
bin1110011110000…
…11100101101000
322110102010011110
413033003211220
5222033343433
620013430320
73002530014
oct717034550
9273363143
10121387368
116257a143
123479b3a0
131c1c155b
141219b544
15a9cb963
hex73c3968

121387368 has 32 divisors (see below), whose sum is σ = 303795360. Its totient is φ = 40418880.

The previous prime is 121387349. The next prime is 121387369. The reversal of 121387368 is 863783121.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (121387369) 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, 26358 + ... + 30618.

It is an arithmetic number, because the mean of its divisors is an integer number (9493605).

Almost surely, 2121387368 is an apocalyptic number.

It is an amenable number.

121387368 is an abundant number, since it is smaller than the sum of its proper divisors (182407992).

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

121387368 is a wasteful number, since it uses less digits than its factorization.

121387368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5457 (or 5453 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 121387368 is about 11017.5935666551. The cubic root of 121387368 is about 495.1359936517.

The spelling of 121387368 in words is "one hundred twenty-one million, three hundred eighty-seven thousand, three hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 24 1187 2374 3561 4261 4748 7122 8522 9496 12783 14244 17044 25566 28488 34088 51132 102264 5057807 10115614 15173421 20231228 30346842 40462456 60693684 121387368