20734258 has 8 divisors (see below), whose sum is σ = 31140252. Its totient is φ = 10354176.

The previous prime is 20734253. The next prime is 20734267. The reversal of 20734258 is 85243702.

It can be written as a sum of positive squares in 2 ways, for example, as 20675209 + 59049 = 4547^2 + 243^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20734253) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4335 + ... + 7762.

Almost surely, 2^20734258 is an apocalyptic number.

20734258 is a deficient number, since it is larger than the sum of its proper divisors (10405994).

20734258 is a wasteful number, since it uses less digits than its factorization.

20734258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12956.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 20734258 is about 4553.4885527472. The cubic root of 20734258 is about 274.7237247404.

The spelling of 20734258 in words is "twenty million, seven hundred thirty-four thousand, two hundred fifty-eight".