20251134 has 24 divisors (see below), whose sum is σ = 45503640. Its totient is φ = 6750216.

The previous prime is 20251129. The next prime is 20251183. The reversal of 20251134 is 43115202.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20349 + ... + 21320.

It is an arithmetic number, because the mean of its divisors is an integer number (1895985).

Almost surely, 2^20251134 is an apocalyptic number.

20251134 is an abundant number, since it is smaller than the sum of its proper divisors (25252506).

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

20251134 is an equidigital number, since it uses as much as digits as its factorization.

20251134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41686 (or 41674 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20251134 is about 4500.1259982360. The cubic root of 20251134 is about 272.5731767675.

Adding to 20251134 its reverse (43115202), we get a palindrome (63366336).

The spelling of 20251134 in words is "twenty million, two hundred fifty-one thousand, one hundred thirty-four".