22306772 has 6 divisors (see below), whose sum is σ = 39036858. Its totient is φ = 11153384.

The previous prime is 22306727. The next prime is 22306787. The reversal of 22306772 is 27760322.

It can be written as a sum of positive squares in only one way, i.e., 16613776 + 5692996 = 4076^2 + 2386^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2788343 + ... + 2788350.

It is an arithmetic number, because the mean of its divisors is an integer number (6506143).

Almost surely, 2^22306772 is an apocalyptic number.

It is an amenable number.

22306772 is a deficient number, since it is larger than the sum of its proper divisors (16730086).

22306772 is a wasteful number, since it uses less digits than its factorization.

22306772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5576697 (or 5576695 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 22306772 is about 4723.0045521892. The cubic root of 22306772 is about 281.5003307365.

The spelling of 22306772 in words is "twenty-two million, three hundred six thousand, seven hundred seventy-two".