22506673 has 16 divisors (see below), whose sum is σ = 27472896. Its totient is φ = 18018000.

The previous prime is 22506667. The next prime is 22506689. The reversal of 22506673 is 37660522.

22506673 = 87² + 88² + ... + 408².

It is not a de Polignac number, because 22506673 - 2⁵ = 22506641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22506613) 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, 5298 + ... + 8548.

It is an arithmetic number, because the mean of its divisors is an integer number (1717056).

Almost surely, 2^22506673 is an apocalyptic number.

22506673 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

22506673 is a deficient number, since it is larger than the sum of its proper divisors (4966223).

22506673 is a wasteful number, since it uses less digits than its factorization.

22506673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3324.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 22506673 is about 4744.1198340683. The cubic root of 22506673 is about 282.3387149431.

The spelling of 22506673 in words is "twenty-two million, five hundred six thousand, six hundred seventy-three".