22780426 has 4 divisors (see below), whose sum is σ = 34170642. Its totient is φ = 11390212.

The previous prime is 22780423. The next prime is 22780427. The reversal of 22780426 is 62408722.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17015625 + 5764801 = 4125^2 + 2401^2 .

It is not an unprimeable number, because it can be changed into a prime (22780423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5695105 + ... + 5695108.

Almost surely, 2^22780426 is an apocalyptic number.

22780426 is a deficient number, since it is larger than the sum of its proper divisors (11390216).

22780426 is a wasteful number, since it uses less digits than its factorization.

22780426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11390215.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 22780426 is about 4772.8844528231. The cubic root of 22780426 is about 283.4788183252.

The spelling of 22780426 in words is "twenty-two million, seven hundred eighty thousand, four hundred twenty-six".