994481280 has 512 divisors, whose sum is σ = 4009824000. Its totient is φ = 230916096.

The previous prime is 994481273. The next prime is 994481287. The reversal of 994481280 is 82184499.

994481280 is a `hidden beast` number, since 9 + 94 + 481 + 2 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (994481273) and next prime (994481287).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (994481287) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4268044 + ... + 4268276.

Almost surely, 2^994481280 is an apocalyptic number.

994481280 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 994481280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2004912000).

994481280 is an abundant number, since it is smaller than the sum of its proper divisors (3015342720).

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

994481280 is a wasteful number, since it uses less digits than its factorization.

994481280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 994481280 is about 31535.3972545139. The cubic root of 994481280 is about 998.1570322230.

The spelling of 994481280 in words is "nine hundred ninety-four million, four hundred eighty-one thousand, two hundred eighty".