921419828 has 48 divisors (see below), whose sum is σ = 1865305344. Its totient is φ = 390113280.

The previous prime is 921419803. The next prime is 921419857. The reversal of 921419828 is 828914129.

921419828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 901958 + ... + 902978.

It is an arithmetic number, because the mean of its divisors is an integer number (38860528).

Almost surely, 2^921419828 is an apocalyptic number.

It is an amenable number.

921419828 is an abundant number, since it is smaller than the sum of its proper divisors (943885516).

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

921419828 is a wasteful number, since it uses less digits than its factorization.

921419828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392 (or 1390 counting only the distinct ones).

The product of its digits is 82944, while the sum is 44.

The square root of 921419828 is about 30354.8979243878. The cubic root of 921419828 is about 973.0888983474.

The spelling of 921419828 in words is "nine hundred twenty-one million, four hundred nineteen thousand, eight hundred twenty-eight".