20270459 has 4 divisors (see below), whose sum is σ = 22113240. Its totient is φ = 18427680.

The previous prime is 20270431. The next prime is 20270479. The reversal of 20270459 is 95407202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20270459 - 2⁸ = 20270203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20270479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921374 + ... + 921395.

It is an arithmetic number, because the mean of its divisors is an integer number (5528310).

Almost surely, 2^20270459 is an apocalyptic number.

20270459 is a deficient number, since it is larger than the sum of its proper divisors (1842781).

20270459 is a wasteful number, since it uses less digits than its factorization.

20270459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842780.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 20270459 is about 4502.2726483411. The cubic root of 20270459 is about 272.6598517820.

The spelling of 20270459 in words is "twenty million, two hundred seventy thousand, four hundred fifty-nine".