994331920 has 80 divisors (see below), whose sum is σ = 2360920320. Its totient is φ = 389376000.

The previous prime is 994331911. The next prime is 994331939. The reversal of 994331920 is 29133499.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 827320 + ... + 828520.

It is an arithmetic number, because the mean of its divisors is an integer number (29511504).

Almost surely, 2^994331920 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 994331920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1180460160).

994331920 is an abundant number, since it is smaller than the sum of its proper divisors (1366588400).

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

994331920 is a wasteful number, since it uses less digits than its factorization.

994331920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424 (or 1418 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 994331920 is about 31533.0290330631. The cubic root of 994331920 is about 998.1070590354.

The spelling of 994331920 in words is "nine hundred ninety-four million, three hundred thirty-one thousand, nine hundred twenty".