22506270 has 16 divisors (see below), whose sum is σ = 54015120. Its totient is φ = 6001664.

The previous prime is 22506269. The next prime is 22506271. The reversal of 22506270 is 7260522.

It is an interprime number because it is at equal distance from previous prime (22506269) and next prime (22506271).

It is a self number, because there is not a number n which added to its sum of digits gives 22506270.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22506271) 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, 375075 + ... + 375134.

It is an arithmetic number, because the mean of its divisors is an integer number (3375945).

Almost surely, 2^22506270 is an apocalyptic number.

22506270 is an abundant number, since it is smaller than the sum of its proper divisors (31508850).

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

22506270 is a wasteful number, since it uses less digits than its factorization.

22506270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750219.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 22506270 is about 4744.0773602461. The cubic root of 22506270 is about 282.3370297661.

Adding to 22506270 its reverse (7260522), we get a palindrome (29766792).

The spelling of 22506270 in words is "twenty-two million, five hundred six thousand, two hundred seventy".