22506498 has 80 divisors (see below), whose sum is σ = 58544640. Its totient is φ = 6329664.

The previous prime is 22506493. The next prime is 22506511. The reversal of 22506498 is 89460522.

It is a happy number.

22506498 is a `hidden beast` number, since 2 + 2 + 5 + 0 + 649 + 8 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22506493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 100815 + ... + 101037.

It is an arithmetic number, because the mean of its divisors is an integer number (731808).

Almost surely, 2^22506498 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22506498, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29272320).

22506498 is an abundant number, since it is smaller than the sum of its proper divisors (36038142).

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

22506498 is a wasteful number, since it uses less digits than its factorization.

22506498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 22506498 is about 4744.1013901476. The cubic root of 22506498 is about 282.3379831690.

The spelling of 22506498 in words is "twenty-two million, five hundred six thousand, four hundred ninety-eight".