284738380 has 24 divisors (see below), whose sum is σ = 598812480. Its totient is φ = 113731200.

The previous prime is 284738353. The next prime is 284738393. The reversal of 284738380 is 83837482.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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 7 ways as a sum of consecutive naturals, for example, 4480 + ... + 24280.

It is an arithmetic number, because the mean of its divisors is an integer number (24950520).

Almost surely, 2^284738380 is an apocalyptic number.

284738380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

284738380 is an abundant number, since it is smaller than the sum of its proper divisors (314074100).

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

284738380 is a wasteful number, since it uses less digits than its factorization.

284738380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20529 (or 20527 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 284738380 is about 16874.1927214311. The cubic root of 284738380 is about 657.8830087363.

The spelling of 284738380 in words is "two hundred eighty-four million, seven hundred thirty-eight thousand, three hundred eighty".