22040412 has 24 divisors (see below), whose sum is σ = 51522576. Its totient is φ = 7333248.

The previous prime is 22040393. The next prime is 22040429. The reversal of 22040412 is 21404022.

It is a super-2 number, since 2×22040412² = 971559522259488, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22040391 and 22040400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6768 + ... + 9480.

It is an arithmetic number, because the mean of its divisors is an integer number (2146774).

Almost surely, 2^22040412 is an apocalyptic number.

It is an amenable number.

22040412 is an abundant number, since it is smaller than the sum of its proper divisors (29482164).

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

22040412 is a wasteful number, since it uses less digits than its factorization.

22040412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3397 (or 3395 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 22040412 is about 4694.7217169924. The cubic root of 22040412 is about 280.3753978373.

Adding to 22040412 its reverse (21404022), we get a palindrome (43444434).

The spelling of 22040412 in words is "twenty-two million, forty thousand, four hundred twelve".