20194680 has 64 divisors (see below), whose sum is σ = 66096000. Its totient is φ = 4895360.

The previous prime is 20194661. The next prime is 20194703. The reversal of 20194680 is 8649102.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 6330 + ... + 8969.

It is an arithmetic number, because the mean of its divisors is an integer number (1032750).

Almost surely, 2^20194680 is an apocalyptic number.

20194680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20194680 is an abundant number, since it is smaller than the sum of its proper divisors (45901320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20194680 is a wasteful number, since it uses less digits than its factorization.

20194680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15324 (or 15320 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 20194680 is about 4493.8491296438. The cubic root of 20194680 is about 272.3196573484.

The spelling of 20194680 in words is "twenty million, one hundred ninety-four thousand, six hundred eighty".