20284132 has 48 divisors (see below), whose sum is σ = 40449024. Its totient is φ = 8820000.

The previous prime is 20284129. The next prime is 20284151. The reversal of 20284132 is 23148202.

It is a super-2 number, since 2×20284132² = 822892021986848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134257 + ... + 134407.

It is an arithmetic number, because the mean of its divisors is an integer number (842688).

Almost surely, 2^20284132 is an apocalyptic number.

20284132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20284132 is a deficient number, since it is larger than the sum of its proper divisors (20164892).

20284132 is a wasteful number, since it uses less digits than its factorization.

20284132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 20284132 is about 4503.7908477193. The cubic root of 20284132 is about 272.7211436064.

The spelling of 20284132 in words is "twenty million, two hundred eighty-four thousand, one hundred thirty-two".