20219826 has 24 divisors (see below), whose sum is σ = 44451792. Its totient is φ = 6127000.

The previous prime is 20219809. The next prime is 20219839. The reversal of 20219826 is 62891202.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20219793 and 20219802.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13200 + ... + 14651.

It is an arithmetic number, because the mean of its divisors is an integer number (1852158).

Almost surely, 2^20219826 is an apocalyptic number.

20219826 is an abundant number, since it is smaller than the sum of its proper divisors (24231966).

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

20219826 is a wasteful number, since it uses less digits than its factorization.

20219826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27878 (or 27867 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 20219826 is about 4496.6460834715. The cubic root of 20219826 is about 272.4326394117.

The spelling of 20219826 in words is "twenty million, two hundred nineteen thousand, eight hundred twenty-six".