22154330 has 16 divisors (see below), whose sum is σ = 43503264. Its totient is φ = 8056080.

The previous prime is 22154329. The next prime is 22154357. The reversal of 22154330 is 3345122.

It is a happy number.

It is a Curzon number.

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, 100592 + ... + 100811.

It is an arithmetic number, because the mean of its divisors is an integer number (2718954).

Almost surely, 2^22154330 is an apocalyptic number.

22154330 is a deficient number, since it is larger than the sum of its proper divisors (21348934).

22154330 is a wasteful number, since it uses less digits than its factorization.

22154330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201421.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 22154330 is about 4706.8386418062. The cubic root of 22154330 is about 280.8576171057.

Adding to 22154330 its reverse (3345122), we get a palindrome (25499452).

The spelling of 22154330 in words is "twenty-two million, one hundred fifty-four thousand, three hundred thirty".