22906742 has 16 divisors (see below), whose sum is σ = 36264240. Its totient is φ = 10821888.

The previous prime is 22906733. The next prime is 22906747. The reversal of 22906742 is 24760922.

It is a junction number, because it is equal to n+sod(n) for n = 22906699 and 22906708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22906747) 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, 22958 + ... + 23934.

It is an arithmetic number, because the mean of its divisors is an integer number (2266515).

Almost surely, 2^22906742 is an apocalyptic number.

22906742 is the 3908-th pentagonal number.

22906742 is a deficient number, since it is larger than the sum of its proper divisors (13357498).

22906742 is a wasteful number, since it uses less digits than its factorization.

22906742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 22906742 is about 4786.0988289002. The cubic root of 22906742 is about 284.0018101452.

The spelling of 22906742 in words is "twenty-two million, nine hundred six thousand, seven hundred forty-two".