22419440 has 20 divisors (see below), whose sum is σ = 52125384. Its totient is φ = 8967744.

The previous prime is 22419431. The next prime is 22419451. The reversal of 22419440 is 4491422.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 140042 + ... + 140201.

Almost surely, 2^22419440 is an apocalyptic number.

22419440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22419440 is an abundant number, since it is smaller than the sum of its proper divisors (29705944).

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

22419440 is a wasteful number, since it uses less digits than its factorization.

22419440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280256 (or 280250 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 22419440 is about 4734.9171059270. The cubic root of 22419440 is about 281.9734730174.

The spelling of 22419440 in words is "twenty-two million, four hundred nineteen thousand, four hundred forty".