121732308 has 144 divisors (see below), whose sum is σ = 346731840. Its totient is φ = 37200384.

The previous prime is 121732279. The next prime is 121732333. The reversal of 121732308 is 803237121.

It is a super-2 number, since 2×121732308² = 29637509622013728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 875703 + ... + 875841.

It is an arithmetic number, because the mean of its divisors is an integer number (2407860).

Almost surely, 2^121732308 is an apocalyptic number.

121732308 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121732308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173365920).

121732308 is an abundant number, since it is smaller than the sum of its proper divisors (224999532).

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

121732308 is a wasteful number, since it uses less digits than its factorization.

121732308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 121732308 is about 11033.2365151845. The cubic root of 121732308 is about 495.6045506093.

Adding to 121732308 its reverse (803237121), we get a palindrome (924969429).

The spelling of 121732308 in words is "one hundred twenty-one million, seven hundred thirty-two thousand, three hundred eight".