22046220 has 72 divisors (see below), whose sum is σ = 76431264. Its totient is φ = 5038848.

The previous prime is 22046209. The next prime is 22046221. The reversal of 22046220 is 2264022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22046193 and 22046202.

It is not an unprimeable number, because it can be changed into a prime (22046221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7489 + ... + 10008.

Almost surely, 2^22046220 is an apocalyptic number.

22046220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22046220 is an abundant number, since it is smaller than the sum of its proper divisors (54385044).

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

22046220 is a wasteful number, since it uses less digits than its factorization.

22046220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17519 (or 17514 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 22046220 is about 4695.3402432625. The cubic root of 22046220 is about 280.4000234703.

The spelling of 22046220 in words is "twenty-two million, forty-six thousand, two hundred twenty".