284949240 has 64 divisors (see below), whose sum is σ = 905139360. Its totient is φ = 71516160.

The previous prime is 284949233. The next prime is 284949281. The reversal of 284949240 is 42949482.

It is a junction number, because it is equal to n+sod(n) for n = 284949192 and 284949201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67801 + ... + 71880.

Almost surely, 2^284949240 is an apocalyptic number.

284949240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

284949240 is an abundant number, since it is smaller than the sum of its proper divisors (620190120).

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

284949240 is a wasteful number, since it uses less digits than its factorization.

284949240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139712 (or 139708 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 284949240 is about 16880.4395677364. The cubic root of 284949240 is about 658.0453647705.

The spelling of 284949240 in words is "two hundred eighty-four million, nine hundred forty-nine thousand, two hundred forty".