22649280 has 56 divisors (see below), whose sum is σ = 71914512. Its totient is φ = 6039552.

The previous prime is 22649279. The next prime is 22649281. The reversal of 22649280 is 8294622.

It is an interprime number because it is at equal distance from previous prime (22649279) and next prime (22649281).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22649281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10837 + ... + 12756.

Almost surely, 2^22649280 is an apocalyptic number.

22649280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22649280 is an abundant number, since it is smaller than the sum of its proper divisors (49265232).

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

22649280 is a wasteful number, since it uses less digits than its factorization.

22649280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23613 (or 23603 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 22649280 is about 4759.1259701756. The cubic root of 22649280 is about 282.9337789927.

The spelling of 22649280 in words is "twenty-two million, six hundred forty-nine thousand, two hundred eighty".