22190719 has 4 divisors (see below), whose sum is σ = 22339800. Its totient is φ = 22041640.

The previous prime is 22190683. The next prime is 22190737. The reversal of 22190719 is 91709122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22190719 - 2⁷ = 22190591 is a prime.

It is a super-2 number, since 2×22190719² = 984856019473922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22190789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74317 + ... + 74614.

It is an arithmetic number, because the mean of its divisors is an integer number (5584950).

Almost surely, 2^22190719 is an apocalyptic number.

22190719 is a deficient number, since it is larger than the sum of its proper divisors (149081).

22190719 is a wasteful number, since it uses less digits than its factorization.

22190719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149080.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 22190719 is about 4710.7026015235. The cubic root of 22190719 is about 281.0113047043.

The spelling of 22190719 in words is "twenty-two million, one hundred ninety thousand, seven hundred nineteen".