22770280 has 32 divisors (see below), whose sum is σ = 55175400. Its totient is φ = 8407296.

The previous prime is 22770269. The next prime is 22770287. The reversal of 22770280 is 8207722.

It can be written as a sum of positive squares in 4 ways, for example, as 18130564 + 4639716 = 4258^2 + 2154^2 .

It is not an unprimeable number, because it can be changed into a prime (22770287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21375 + ... + 22414.

Almost surely, 2^22770280 is an apocalyptic number.

22770280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22770280 is an abundant number, since it is smaller than the sum of its proper divisors (32405120).

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

22770280 is a wasteful number, since it uses less digits than its factorization.

22770280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43813 (or 43809 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 22770280 is about 4771.8214551678. The cubic root of 22770280 is about 283.4367265868.

It can be divided in two parts, 227 and 70280, that added together give a palindrome (70507).

The spelling of 22770280 in words is "twenty-two million, seven hundred seventy thousand, two hundred eighty".