20223619 has 16 divisors (see below), whose sum is σ = 23496480. Its totient is φ = 17245440.

The previous prime is 20223617. The next prime is 20223629. The reversal of 20223619 is 91632202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20223619 - 2¹ = 20223617 is a prime.

It is a super-2 number, since 2×20223619² = 817989530914322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20223593 and 20223602.

It is not an unprimeable number, because it can be changed into a prime (20223611) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9129 + ... + 11125.

It is an arithmetic number, because the mean of its divisors is an integer number (1468530).

Almost surely, 2^20223619 is an apocalyptic number.

20223619 is a deficient number, since it is larger than the sum of its proper divisors (3272861).

20223619 is a wasteful number, since it uses less digits than its factorization.

20223619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2070.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 20223619 is about 4497.0678224817. The cubic root of 20223619 is about 272.4496733927.

The spelling of 20223619 in words is "twenty million, two hundred twenty-three thousand, six hundred nineteen".