22061420 has 24 divisors (see below), whose sum is σ = 46421424. Its totient is φ = 8806976.

The previous prime is 22061419. The next prime is 22061423. The reversal of 22061420 is 2416022.

It is not an unprimeable number, because it can be changed into a prime (22061423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14747 + ... + 16173.

It is an arithmetic number, because the mean of its divisors is an integer number (1934226).

Almost surely, 2^22061420 is an apocalyptic number.

22061420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22061420 is an abundant number, since it is smaller than the sum of its proper divisors (24360004).

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

22061420 is a wasteful number, since it uses less digits than its factorization.

22061420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209 (or 2207 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 22061420 is about 4696.9585904072. The cubic root of 22061420 is about 280.4644502552.

Subtracting from 22061420 its sum of digits (17), we obtain a triangular number (22061403 = T₆₆₄₂).

Adding to 22061420 its reverse (2416022), we get a palindrome (24477442).

The spelling of 22061420 in words is "twenty-two million, sixty-one thousand, four hundred twenty".