22398407 has 8 divisors (see below), whose sum is σ = 22840800. Its totient is φ = 21958560.

The previous prime is 22398403. The next prime is 22398419. The reversal of 22398407 is 70489322.

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

It is a cyclic number.

It is not a de Polignac number, because 22398407 - 2² = 22398403 is a prime.

It is a super-2 number, since 2×22398407² = 1003377272275298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22398403) 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, 36233 + ... + 36845.

It is an arithmetic number, because the mean of its divisors is an integer number (2855100).

Almost surely, 2^22398407 is an apocalyptic number.

22398407 is a deficient number, since it is larger than the sum of its proper divisors (442393).

22398407 is an equidigital number, since it uses as much as digits as its factorization.

22398407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 22398407 is about 4732.6955321466. The cubic root of 22398407 is about 281.8852667748.

The spelling of 22398407 in words is "twenty-two million, three hundred ninety-eight thousand, four hundred seven".