20619486 has 24 divisors (see below), whose sum is σ = 44871840. Its totient is φ = 6842976.

The previous prime is 20619461. The next prime is 20619527. The reversal of 20619486 is 68491602.

It is a self number, because there is not a number n which added to its sum of digits gives 20619486.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1906 + ... + 6698.

It is an arithmetic number, because the mean of its divisors is an integer number (1869660).

Almost surely, 2^20619486 is an apocalyptic number.

20619486 is an abundant number, since it is smaller than the sum of its proper divisors (24252354).

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

20619486 is a wasteful number, since it uses less digits than its factorization.

20619486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5040 (or 5037 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 20619486 is about 4540.8684191463. The cubic root of 20619486 is about 274.2158864751.

The spelling of 20619486 in words is "twenty million, six hundred nineteen thousand, four hundred eighty-six".