284138748 has 36 divisors (see below), whose sum is σ = 760490640. Its totient is φ = 89141376.

The previous prime is 284138741. The next prime is 284138753. The reversal of 284138748 is 847831482.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284138741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 231528 + ... + 232751.

It is an arithmetic number, because the mean of its divisors is an integer number (21124740).

Almost surely, 2^284138748 is an apocalyptic number.

It is an amenable number.

284138748 is an abundant number, since it is smaller than the sum of its proper divisors (476351892).

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

284138748 is a wasteful number, since it uses less digits than its factorization.

284138748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464306 (or 464301 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 284138748 is about 16856.4156332240. The cubic root of 284138748 is about 657.4208711224.

The spelling of 284138748 in words is "two hundred eighty-four million, one hundred thirty-eight thousand, seven hundred forty-eight".