22420412 has 12 divisors (see below), whose sum is σ = 44840880. Its totient is φ = 9608736.

The previous prime is 22420403. The next prime is 22420421. The reversal of 22420412 is 21402422.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22420403) and next prime (22420421).

22420412 is an admirable number.

It is a super-3 number, since 3×22420412³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400337 + ... + 400392.

It is an arithmetic number, because the mean of its divisors is an integer number (3736740).

Almost surely, 2^22420412 is an apocalyptic number.

It is an amenable number.

22420412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22420412 is a wasteful number, since it uses less digits than its factorization.

22420412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800740 (or 800738 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 22420412 is about 4735.0197465269. The cubic root of 22420412 is about 281.9775479669.

Adding to 22420412 its reverse (21402422), we get a palindrome (43822834).

The spelling of 22420412 in words is "twenty-two million, four hundred twenty thousand, four hundred twelve".