20494886 has 8 divisors (see below), whose sum is σ = 32079024. Its totient is φ = 9801880.

The previous prime is 20494883. The next prime is 20494907. The reversal of 20494886 is 68849402.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20494883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222725 + ... + 222816.

It is an arithmetic number, because the mean of its divisors is an integer number (4009878).

Almost surely, 2^20494886 is an apocalyptic number.

20494886 is a deficient number, since it is larger than the sum of its proper divisors (11584138).

20494886 is a wasteful number, since it uses less digits than its factorization.

20494886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445566.

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 20494886 is about 4527.1277870190. The cubic root of 20494886 is about 273.6624237004.

The spelling of 20494886 in words is "twenty million, four hundred ninety-four thousand, eight hundred eighty-six".