284139798 has 64 divisors (see below), whose sum is σ = 601318080. Its totient is φ = 89413632.

The previous prime is 284139787. The next prime is 284139827. The reversal of 284139798 is 897931482.

It is a self number, because there is not a number n which added to its sum of digits gives 284139798.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1442236 + ... + 1442432.

It is an arithmetic number, because the mean of its divisors is an integer number (9395595).

Almost surely, 2^284139798 is an apocalyptic number.

284139798 is an abundant number, since it is smaller than the sum of its proper divisors (317178282).

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

284139798 is a wasteful number, since it uses less digits than its factorization.

284139798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401.

The product of its digits is 870912, while the sum is 51.

The square root of 284139798 is about 16856.4467786067. The cubic root of 284139798 is about 657.4216809275.

The spelling of 284139798 in words is "two hundred eighty-four million, one hundred thirty-nine thousand, seven hundred ninety-eight".