22280961 has 16 divisors (see below), whose sum is σ = 31392000. Its totient is φ = 14034048.

The previous prime is 22280953. The next prime is 22280963. The reversal of 22280961 is 16908222.

It is not a de Polignac number, because 22280961 - 2³ = 22280953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22280963) 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 15 ways as a sum of consecutive naturals, for example, 1365 + ... + 6813.

It is an arithmetic number, because the mean of its divisors is an integer number (1962000).

Almost surely, 2^22280961 is an apocalyptic number.

It is an amenable number.

22280961 is a deficient number, since it is larger than the sum of its proper divisors (9111039).

22280961 is a wasteful number, since it uses less digits than its factorization.

22280961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5528.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 22280961 is about 4720.2712845768. The cubic root of 22280961 is about 281.3917148530.

The spelling of 22280961 in words is "twenty-two million, two hundred eighty thousand, nine hundred sixty-one".