122516728 has 32 divisors (see below), whose sum is σ = 232661520. Its totient is φ = 60480000.

The previous prime is 122516707. The next prime is 122516741. The reversal of 122516728 is 827615221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 122516693 and 122516702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305328 + ... + 305728.

Almost surely, 2^122516728 is an apocalyptic number.

It is an amenable number.

122516728 is a deficient number, since it is larger than the sum of its proper divisors (110144792).

122516728 is a wasteful number, since it uses less digits than its factorization.

122516728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799 (or 795 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 122516728 is about 11068.7274788026. The cubic root of 122516728 is about 496.6667995936. Note that the first 3 decimals are identical.

The spelling of 122516728 in words is "one hundred twenty-two million, five hundred sixteen thousand, seven hundred twenty-eight".