20451334 has 16 divisors (see below), whose sum is σ = 32384880. Its totient is φ = 9659520.

The previous prime is 20451329. The next prime is 20451373. The reversal of 20451334 is 43315402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19282 + ... + 20314.

It is an arithmetic number, because the mean of its divisors is an integer number (2024055).

Almost surely, 2^20451334 is an apocalyptic number.

20451334 is a deficient number, since it is larger than the sum of its proper divisors (11933546).

20451334 is a wasteful number, since it uses less digits than its factorization.

20451334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 20451334 is about 4522.3151150710. The cubic root of 20451334 is about 273.4684403780.

Adding to 20451334 its reverse (43315402), we get a palindrome (63766736).

The spelling of 20451334 in words is "twenty million, four hundred fifty-one thousand, three hundred thirty-four".