281420984 has 16 divisors (see below), whose sum is σ = 568254120. Its totient is φ = 129886560.

The previous prime is 281420983. The next prime is 281420987. The reversal of 281420984 is 489024182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281420981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1352882 + ... + 1353089.

Almost surely, 2^281420984 is an apocalyptic number.

It is an amenable number.

281420984 is an abundant number, since it is smaller than the sum of its proper divisors (286833136).

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

281420984 is a wasteful number, since it uses less digits than its factorization.

281420984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2705990 (or 2705986 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 281420984 is about 16775.6068146580. The cubic root of 281420984 is about 655.3180934618.

The spelling of 281420984 in words is "two hundred eighty-one million, four hundred twenty thousand, nine hundred eighty-four".