121850728 has 16 divisors (see below), whose sum is σ = 228646080. Its totient is φ = 60878448.

The previous prime is 121850719. The next prime is 121850737. The reversal of 121850728 is 827058121.

It is an interprime number because it is at equal distance from previous prime (121850719) and next prime (121850737).

It is a junction number, because it is equal to n+sod(n) for n = 121850693 and 121850702.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6775 + ... + 17017.

It is an arithmetic number, because the mean of its divisors is an integer number (14290380).

Almost surely, 2^121850728 is an apocalyptic number.

It is an amenable number.

121850728 is a deficient number, since it is larger than the sum of its proper divisors (106795352).

121850728 is a wasteful number, since it uses less digits than its factorization.

121850728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11736 (or 11732 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 121850728 is about 11038.6017230445. The cubic root of 121850728 is about 495.7652049479.

The spelling of 121850728 in words is "one hundred twenty-one million, eight hundred fifty thousand, seven hundred twenty-eight".