20461894 has 8 divisors (see below), whose sum is σ = 31406760. Its totient is φ = 9992976.

The previous prime is 20461853. The next prime is 20461913. The reversal of 20461894 is 49816402.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 118879 + ... + 119050.

It is an arithmetic number, because the mean of its divisors is an integer number (3925845).

Almost surely, 2^20461894 is an apocalyptic number.

20461894 is a deficient number, since it is larger than the sum of its proper divisors (10944866).

20461894 is a wasteful number, since it uses less digits than its factorization.

20461894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237974.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 20461894 is about 4523.4825079799. The cubic root of 20461894 is about 273.5155005491.

The spelling of 20461894 in words is "twenty million, four hundred sixty-one thousand, eight hundred ninety-four".