22308897 has 8 divisors (see below), whose sum is σ = 32033344. Its totient is φ = 13728528.

The previous prime is 22308893. The next prime is 22308899. The reversal of 22308897 is 79880322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22308897 - 2² = 22308893 is a prime.

It is a super-3 number, since 3×22308897³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 572023 = 22308897 / (2 + 2 + 3 + 0 + 8 + 8 + 9 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22308893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285973 + ... + 286050.

It is an arithmetic number, because the mean of its divisors is an integer number (4004168).

Almost surely, 2^22308897 is an apocalyptic number.

It is an amenable number.

22308897 is a deficient number, since it is larger than the sum of its proper divisors (9724447).

22308897 is a wasteful number, since it uses less digits than its factorization.

22308897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572039.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 22308897 is about 4723.2295095623. The cubic root of 22308897 is about 281.5092692658.

The spelling of 22308897 in words is "twenty-two million, three hundred eight thousand, eight hundred ninety-seven".