22390004 has 24 divisors (see below), whose sum is σ = 48225408. Its totient is φ = 8857440.

The previous prime is 22389959. The next prime is 22390007. The reversal of 22390004 is 40009322.

22390004 = T₄₃₀ + T₄₃₁ + ... + T₅₉₇.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22390007) 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 7 ways as a sum of consecutive naturals, for example, 30392 + ... + 31119.

It is an arithmetic number, because the mean of its divisors is an integer number (2009392).

Almost surely, 2^22390004 is an apocalyptic number.

It is an amenable number.

22390004 is an abundant number, since it is smaller than the sum of its proper divisors (25835404).

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

22390004 is a wasteful number, since it uses less digits than its factorization.

22390004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61535 (or 61533 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 22390004 is about 4731.8076883999. The cubic root of 22390004 is about 281.8500116163.

Adding to 22390004 its reverse (40009322), we get a palindrome (62399326).

The spelling of 22390004 in words is "twenty-two million, three hundred ninety thousand, four".