20194461 has 32 divisors (see below), whose sum is σ = 34790400. Its totient is φ = 11337840.

The previous prime is 20194409. The next prime is 20194507. The reversal of 20194461 is 16449102.

It is not a de Polignac number, because 20194461 - 2⁹ = 20193949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20194061) 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 31 ways as a sum of consecutive naturals, for example, 10246 + ... + 12056.

It is an arithmetic number, because the mean of its divisors is an integer number (1087200).

Almost surely, 2^20194461 is an apocalyptic number.

20194461 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20194461 is a deficient number, since it is larger than the sum of its proper divisors (14595939).

20194461 is a wasteful number, since it uses less digits than its factorization.

20194461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886 (or 1880 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 20194461 is about 4493.8247629386. The cubic root of 20194461 is about 272.3186729601.

It can be divided in two parts, 20 and 194461, that added together give a 4-th power (194481 = 21⁴).

The spelling of 20194461 in words is "twenty million, one hundred ninety-four thousand, four hundred sixty-one".