22272477 has 8 divisors (see below), whose sum is σ = 30654720. Its totient is φ = 14369280.

The previous prime is 22272473. The next prime is 22272521. The reversal of 22272477 is 77427222.

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

It is not a de Polignac number, because 22272477 - 2² = 22272473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22272473) 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, 119652 + ... + 119837.

It is an arithmetic number, because the mean of its divisors is an integer number (3831840).

Almost surely, 2^22272477 is an apocalyptic number.

It is an amenable number.

22272477 is a deficient number, since it is larger than the sum of its proper divisors (8382243).

22272477 is a wasteful number, since it uses less digits than its factorization.

22272477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239523.

The product of its digits is 21952, while the sum is 33.

The square root of 22272477 is about 4719.3725218508. The cubic root of 22272477 is about 281.3559948141.

Adding to 22272477 its reverse (77427222), we get a palindrome (99699699).

The spelling of 22272477 in words is "twenty-two million, two hundred seventy-two thousand, four hundred seventy-seven".