22720498 has 8 divisors (see below), whose sum is σ = 34152192. Its totient is φ = 11336436.

The previous prime is 22720463. The next prime is 22720499. The reversal of 22720498 is 89402722.

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

It is not an unprimeable number, because it can be changed into a prime (22720499) 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, 10690 + ... + 12637.

It is an arithmetic number, because the mean of its divisors is an integer number (4269024).

Almost surely, 2^22720498 is an apocalyptic number.

22720498 is a deficient number, since it is larger than the sum of its proper divisors (11431694).

22720498 is a wasteful number, since it uses less digits than its factorization.

22720498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23816.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 22720498 is about 4766.6023538785. The cubic root of 22720498 is about 283.2300193874.

The spelling of 22720498 in words is "twenty-two million, seven hundred twenty thousand, four hundred ninety-eight".