23220246 has 32 divisors (see below), whose sum is σ = 53722368. Its totient is φ = 6553440.

The previous prime is 23220229. The next prime is 23220247. The reversal of 23220246 is 64202232.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23220247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156 + ... + 6816.

It is an arithmetic number, because the mean of its divisors is an integer number (1678824).

Almost surely, 2^23220246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23220246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26861184).

23220246 is an abundant number, since it is smaller than the sum of its proper divisors (30502122).

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

23220246 is a wasteful number, since it uses less digits than its factorization.

23220246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6756.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 23220246 is about 4818.7390466802. The cubic root of 23220246 is about 285.2915698742.

Adding to 23220246 its reverse (64202232), we get a palindrome (87422478).

The spelling of 23220246 in words is "twenty-three million, two hundred twenty thousand, two hundred forty-six".