22506154 has 16 divisors (see below), whose sum is σ = 36974880. Its totient is φ = 10189360.

The previous prime is 22506149. The next prime is 22506161. The reversal of 22506154 is 45160522.

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, 4017 + ... + 7819.

It is an arithmetic number, because the mean of its divisors is an integer number (2310930).

Almost surely, 2^22506154 is an apocalyptic number.

22506154 is a deficient number, since it is larger than the sum of its proper divisors (14468726).

22506154 is a wasteful number, since it uses less digits than its factorization.

22506154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4085.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 22506154 is about 4744.0651344601. The cubic root of 22506154 is about 282.3365446991.

Adding to 22506154 its reverse (45160522), we get a palindrome (67666676).

The spelling of 22506154 in words is "twenty-two million, five hundred six thousand, one hundred fifty-four".