20284134 has 32 divisors (see below), whose sum is σ = 45991680. Its totient is φ = 5912352.

The previous prime is 20284129. The next prime is 20284151. The reversal of 20284134 is 43148202.

It is a super-2 number, since 2×20284134² = 822892184259912, which contains 22 as substring.

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, 5362 + ... + 8325.

It is an arithmetic number, because the mean of its divisors is an integer number (1437240).

Almost surely, 2^20284134 is an apocalyptic number.

20284134 is an abundant number, since it is smaller than the sum of its proper divisors (25707546).

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

20284134 is a wasteful number, since it uses less digits than its factorization.

20284134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13724.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 20284134 is about 4503.7910697545. The cubic root of 20284134 is about 272.7211525697.

The spelling of 20284134 in words is "twenty million, two hundred eighty-four thousand, one hundred thirty-four".