22780276 has 6 divisors (see below), whose sum is σ = 39865490. Its totient is φ = 11390136.

The previous prime is 22780273. The next prime is 22780291. The reversal of 22780276 is 67208722.

It can be written as a sum of positive squares in only one way, i.e., 21622500 + 1157776 = 4650^2 + 1076^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22780273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2847531 + ... + 2847538.

Almost surely, 2^22780276 is an apocalyptic number.

It is an amenable number.

22780276 is a deficient number, since it is larger than the sum of its proper divisors (17085214).

22780276 is a wasteful number, since it uses less digits than its factorization.

22780276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5695073 (or 5695071 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 22780276 is about 4772.8687390290. The cubic root of 22780276 is about 283.4781961256.

Adding to 22780276 its reverse (67208722), we get a palindrome (89988998).

The spelling of 22780276 in words is "twenty-two million, seven hundred eighty thousand, two hundred seventy-six".