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121997352 = 2336775869
BaseRepresentation
bin1110100010110…
…00100000101000
322111120002220110
413101120200220
5222212403402
620034454320
73010650261
oct721304050
9274502813
10121997352
1162956464
1234a343a0
131c3760a9
14122b9968
15aa9c56c
hex7458828

121997352 has 32 divisors (see below), whose sum is σ = 309549600. Its totient is φ = 40058304.

The previous prime is 121997339. The next prime is 121997353. The reversal of 121997352 is 253799121.

It is a self number, because there is not a number n which added to its sum of digits gives 121997352.

It is not an unprimeable number, because it can be changed into a prime (121997353) 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, 36327 + ... + 39542.

It is an arithmetic number, because the mean of its divisors is an integer number (9673425).

Almost surely, 2121997352 is an apocalyptic number.

121997352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121997352 is an abundant number, since it is smaller than the sum of its proper divisors (187552248).

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

121997352 is a wasteful number, since it uses less digits than its factorization.

121997352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75945 (or 75941 counting only the distinct ones).

The product of its digits is 34020, while the sum is 39.

The square root of 121997352 is about 11045.2411472091. The cubic root of 121997352 is about 495.9639780465.

The spelling of 121997352 in words is "one hundred twenty-one million, nine hundred ninety-seven thousand, three hundred fifty-two".