22650019 has 4 divisors (see below), whose sum is σ = 25885744. Its totient is φ = 19414296.

The previous prime is 22650007. The next prime is 22650029. The reversal of 22650019 is 91005622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91005622 = 2 ⋅45502811.

It is a cyclic number.

It is not a de Polignac number, because 22650019 - 2¹⁹ = 22125731 is a prime.

It is a super-2 number, since 2×22650019² = 1026046721400722, 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 = 22649975 and 22650002.

It is not an unprimeable number, because it can be changed into a prime (22650029) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1617852 + ... + 1617865.

It is an arithmetic number, because the mean of its divisors is an integer number (6471436).

Almost surely, 2^22650019 is an apocalyptic number.

22650019 is a deficient number, since it is larger than the sum of its proper divisors (3235725).

22650019 is an equidigital number, since it uses as much as digits as its factorization.

22650019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3235724.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 22650019 is about 4759.2036098490. The cubic root of 22650019 is about 282.9368561441.

The spelling of 22650019 in words is "twenty-two million, six hundred fifty thousand, nineteen".