908421920 has 96 divisors (see below), whose sum is σ = 2581891200. Its totient is φ = 295059456.

The previous prime is 908421919. The next prime is 908421931. The reversal of 908421920 is 29124809.

It is a Harshad number since it is a multiple of its sum of digits (35).

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 15 ways as a sum of consecutive naturals, for example, 65 + ... + 42624.

It is an arithmetic number, because the mean of its divisors is an integer number (26894700).

Almost surely, 2^908421920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 908421920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1290945600).

908421920 is an abundant number, since it is smaller than the sum of its proper divisors (1673469280).

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

908421920 is a wasteful number, since it uses less digits than its factorization.

908421920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42730 (or 42722 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 908421920 is about 30140.0384870358. The cubic root of 908421920 is about 968.4916224152.

The spelling of 908421920 in words is "nine hundred eight million, four hundred twenty-one thousand, nine hundred twenty".