22780770 has 16 divisors (see below), whose sum is σ = 54673920. Its totient is φ = 6074864.

The previous prime is 22780733. The next prime is 22780777. The reversal of 22780770 is 7708722.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22780777) 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, 379650 + ... + 379709.

It is an arithmetic number, because the mean of its divisors is an integer number (3417120).

Almost surely, 2^22780770 is an apocalyptic number.

22780770 is an abundant number, since it is smaller than the sum of its proper divisors (31893150).

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

22780770 is a wasteful number, since it uses less digits than its factorization.

22780770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759369.

The product of its (nonzero) digits is 10976, while the sum is 33.

The square root of 22780770 is about 4772.9204895954. The cubic root of 22780770 is about 283.4802452260.

The spelling of 22780770 in words is "twenty-two million, seven hundred eighty thousand, seven hundred seventy".