20484786 has 16 divisors (see below), whose sum is σ = 46822464. Its totient is φ = 5852784.

The previous prime is 20484773. The next prime is 20484799. The reversal of 20484786 is 68748402.

It is an interprime number because it is at equal distance from previous prime (20484773) and next prime (20484799).

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 7 ways as a sum of consecutive naturals, for example, 243825 + ... + 243908.

It is an arithmetic number, because the mean of its divisors is an integer number (2926404).

Almost surely, 2^20484786 is an apocalyptic number.

20484786 is an abundant number, since it is smaller than the sum of its proper divisors (26337678).

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

20484786 is a wasteful number, since it uses less digits than its factorization.

20484786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487745.

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 20484786 is about 4526.0121519943. The cubic root of 20484786 is about 273.6174621648.

The spelling of 20484786 in words is "twenty million, four hundred eighty-four thousand, seven hundred eighty-six".