22040438 has 8 divisors (see below), whose sum is σ = 37783632. Its totient is φ = 9445896.

The previous prime is 22040429. The next prime is 22040441. The reversal of 22040438 is 83404022.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 787145 + ... + 787172.

It is an arithmetic number, because the mean of its divisors is an integer number (4722954).

Almost surely, 2^22040438 is an apocalyptic number.

22040438 is a deficient number, since it is larger than the sum of its proper divisors (15743194).

22040438 is a wasteful number, since it uses less digits than its factorization.

22040438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574326.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 22040438 is about 4694.7244860588. The cubic root of 22040438 is about 280.3755080856.

The spelling of 22040438 in words is "twenty-two million, forty thousand, four hundred thirty-eight".