284572020 has 48 divisors (see below), whose sum is σ = 797892480. Its totient is φ = 75782016.

The previous prime is 284572019. The next prime is 284572037. The reversal of 284572020 is 20275482.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47514 + ... + 53166.

It is an arithmetic number, because the mean of its divisors is an integer number (16622760).

Almost surely, 2^284572020 is an apocalyptic number.

284572020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

284572020 is an abundant number, since it is smaller than the sum of its proper divisors (513320460).

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

284572020 is a wasteful number, since it uses less digits than its factorization.

284572020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6504 (or 6502 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 284572020 is about 16869.2625802078. The cubic root of 284572020 is about 657.7548598265.

The spelling of 284572020 in words is "two hundred eighty-four million, five hundred seventy-two thousand, twenty".