928121240400 has 60 divisors (see below), whose sum is σ = 2973081710592. Its totient is φ = 247498997120.

The previous prime is 928121240357. The next prime is 928121240419. The reversal of 928121240400 is 4042121829.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×928121240400² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 386715984 + ... + 386718383.

Almost surely, 2^928121240400 is an apocalyptic number.

It is an amenable number.

928121240400 is an abundant number, since it is smaller than the sum of its proper divisors (2044960470192).

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

928121240400 is a wasteful number, since it uses less digits than its factorization.

928121240400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773434388 (or 773434377 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The spelling of 928121240400 in words is "nine hundred twenty-eight billion, one hundred twenty-one million, two hundred forty thousand, four hundred".