20259194 has 4 divisors (see below), whose sum is σ = 30388794. Its totient is φ = 10129596.

The previous prime is 20259193. The next prime is 20259199. The reversal of 20259194 is 49195202.

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

It can be written as a sum of positive squares in only one way, i.e., 20133169 + 126025 = 4487^2 + 355^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20259194.

It is not an unprimeable number, because it can be changed into a prime (20259191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5064797 + ... + 5064800.

Almost surely, 2^20259194 is an apocalyptic number.

20259194 is a deficient number, since it is larger than the sum of its proper divisors (10129600).

20259194 is a wasteful number, since it uses less digits than its factorization.

20259194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10129599.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 20259194 is about 4501.0214396290. The cubic root of 20259194 is about 272.6093335642.

The spelling of 20259194 in words is "twenty million, two hundred fifty-nine thousand, one hundred ninety-four".