22354004 has 6 divisors (see below), whose sum is σ = 39119514. Its totient is φ = 11177000.

The previous prime is 22354001. The next prime is 22354019. The reversal of 22354004 is 40045322.

It can be written as a sum of positive squares in only one way, i.e., 19624900 + 2729104 = 4430^2 + 1652^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22354001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2794247 + ... + 2794254.

It is an arithmetic number, because the mean of its divisors is an integer number (6519919).

Almost surely, 2^22354004 is an apocalyptic number.

It is an amenable number.

22354004 is a deficient number, since it is larger than the sum of its proper divisors (16765510).

22354004 is a wasteful number, since it uses less digits than its factorization.

22354004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5588505 (or 5588503 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 22354004 is about 4728.0021150587. The cubic root of 22354004 is about 281.6988720961.

Subtracting from 22354004 its sum of digits (20), we obtain a square (22353984 = 4728²).

Adding to 22354004 its reverse (40045322), we get a palindrome (62399326).

The spelling of 22354004 in words is "twenty-two million, three hundred fifty-four thousand, four".