20194455 has 16 divisors (see below), whose sum is σ = 32440320. Its totient is φ = 10727328.

The previous prime is 20194409. The next prime is 20194507. The reversal of 20194455 is 55449102.

It is not a de Polignac number, because 20194455 - 2⁷ = 20194327 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1386 + ... + 6504.

It is an arithmetic number, because the mean of its divisors is an integer number (2027520).

Almost surely, 2^20194455 is an apocalyptic number.

20194455 is a deficient number, since it is larger than the sum of its proper divisors (12245865).

20194455 is a wasteful number, since it uses less digits than its factorization.

20194455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5390.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 20194455 is about 4493.8240953558. The cubic root of 20194455 is about 272.3186459904.

The spelling of 20194455 in words is "twenty million, one hundred ninety-four thousand, four hundred fifty-five".