22770690 has 64 divisors (see below), whose sum is σ = 58067712. Its totient is φ = 5702400.

The previous prime is 22770689. The next prime is 22770697. The reversal of 22770690 is 9607722.

It is a super-2 number, since 2×22770690² = 1037008646152200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22770697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41820 + ... + 42360.

It is an arithmetic number, because the mean of its divisors is an integer number (907308).

Almost surely, 2^22770690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22770690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29033856).

22770690 is an abundant number, since it is smaller than the sum of its proper divisors (35297022).

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

22770690 is a wasteful number, since it uses less digits than its factorization.

22770690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 22770690 is about 4771.8644155089. The cubic root of 22770690 is about 283.4384277570.

The spelling of 22770690 in words is "twenty-two million, seven hundred seventy thousand, six hundred ninety".