22315420 has 12 divisors (see below), whose sum is σ = 46862424. Its totient is φ = 8926160.

The previous prime is 22315411. The next prime is 22315421. The reversal of 22315420 is 2451322.

It is a super-3 number, since 3×22315420³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22315421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557866 + ... + 557905.

It is an arithmetic number, because the mean of its divisors is an integer number (3905202).

Almost surely, 2^22315420 is an apocalyptic number.

22315420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22315420 is an abundant number, since it is smaller than the sum of its proper divisors (24547004).

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

22315420 is a wasteful number, since it uses less digits than its factorization.

22315420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115780 (or 1115778 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 22315420 is about 4723.9199823875. The cubic root of 22315420 is about 281.5367038512.

Adding to 22315420 its reverse (2451322), we get a palindrome (24766742).

The spelling of 22315420 in words is "twenty-two million, three hundred fifteen thousand, four hundred twenty".