22488747 has 4 divisors (see below), whose sum is σ = 29985000. Its totient is φ = 14992496.

The previous prime is 22488727. The next prime is 22488757. The reversal of 22488747 is 74788422.

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

It is a cyclic number.

It is not a de Polignac number, because 22488747 - 2⁷ = 22488619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22488699 and 22488708.

It is not an unprimeable number, because it can be changed into a prime (22488727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3748122 + ... + 3748127.

It is an arithmetic number, because the mean of its divisors is an integer number (7496250).

Almost surely, 2^22488747 is an apocalyptic number.

22488747 is a deficient number, since it is larger than the sum of its proper divisors (7496253).

22488747 is an equidigital number, since it uses as much as digits as its factorization.

22488747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7496252.

The product of its digits is 200704, while the sum is 42.

The square root of 22488747 is about 4742.2301715543. The cubic root of 22488747 is about 282.2637364674.

The spelling of 22488747 in words is "twenty-two million, four hundred eighty-eight thousand, seven hundred forty-seven".