20194940 has 12 divisors (see below), whose sum is σ = 42409416. Its totient is φ = 8077968.

The previous prime is 20194931. The next prime is 20194957. The reversal of 20194940 is 4949102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504854 + ... + 504893.

It is an arithmetic number, because the mean of its divisors is an integer number (3534118).

Almost surely, 2^20194940 is an apocalyptic number.

20194940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20194940 is an abundant number, since it is smaller than the sum of its proper divisors (22214476).

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

20194940 is a wasteful number, since it uses less digits than its factorization.

20194940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009756 (or 1009754 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 20194940 is about 4493.8780579807. The cubic root of 20194940 is about 272.3208260193.

The spelling of 20194940 in words is "twenty million, one hundred ninety-four thousand, nine hundred forty".