284940648 has 24 divisors (see below), whose sum is σ = 771714450. Its totient is φ = 94980192.

The previous prime is 284940647. The next prime is 284940653. The reversal of 284940648 is 846049482.

It can be written as a sum of positive squares in only one way, i.e., 281635524 + 3305124 = 16782^2 + 1818^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×284940648³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (284940647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1978683 + ... + 1978826.

Almost surely, 2^284940648 is an apocalyptic number.

It is an amenable number.

284940648 is an abundant number, since it is smaller than the sum of its proper divisors (486773802).

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

284940648 is a wasteful number, since it uses less digits than its factorization.

284940648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3957521 (or 3957514 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The square root of 284940648 is about 16880.1850700755. The cubic root of 284940648 is about 658.0387507474.

The spelling of 284940648 in words is "two hundred eighty-four million, nine hundred forty thousand, six hundred forty-eight".