22364420 has 24 divisors (see below), whose sum is σ = 50578584. Its totient is φ = 8257536.

The previous prime is 22364389. The next prime is 22364431. The reversal of 22364420 is 2446322.

It can be written as a sum of positive squares in 4 ways, for example, as 1149184 + 21215236 = 1072^2 + 4606^2 .

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, 42749 + ... + 43268.

It is an arithmetic number, because the mean of its divisors is an integer number (2107441).

Almost surely, 2^22364420 is an apocalyptic number.

22364420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22364420 is an abundant number, since it is smaller than the sum of its proper divisors (28214164).

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

22364420 is a wasteful number, since it uses less digits than its factorization.

22364420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86039 (or 86037 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 22364420 is about 4729.1035091231. The cubic root of 22364420 is about 281.7426184698.

The spelling of 22364420 in words is "twenty-two million, three hundred sixty-four thousand, four hundred twenty".