121906928 has 40 divisors (see below), whose sum is σ = 277492656. Its totient is φ = 51148800.

The previous prime is 121906901. The next prime is 121906951. The reversal of 121906928 is 829609121.

It is a super-2 number, since 2×121906928² = 29722598188794368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121906891 and 121906900.

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, 24353 + ... + 28928.

Almost surely, 2^121906928 is an apocalyptic number.

It is an amenable number.

121906928 is an abundant number, since it is smaller than the sum of its proper divisors (155585728).

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

121906928 is a wasteful number, since it uses less digits than its factorization.

121906928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53313 (or 53307 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 121906928 is about 11041.1470418612. The cubic root of 121906928 is about 495.8414121855.

The spelling of 121906928 in words is "one hundred twenty-one million, nine hundred six thousand, nine hundred twenty-eight".