22400161 has 8 divisors (see below), whose sum is σ = 25660800. Its totient is φ = 19154688.

The previous prime is 22400149. The next prime is 22400167. The reversal of 22400161 is 16100422.

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

It is not a de Polignac number, because 22400161 - 2¹³ = 22391969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22400167) 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, 421 + ... + 6706.

It is an arithmetic number, because the mean of its divisors is an integer number (3207600).

Almost surely, 2^22400161 is an apocalyptic number.

It is an amenable number.

22400161 is a deficient number, since it is larger than the sum of its proper divisors (3260639).

22400161 is an equidigital number, since it uses as much as digits as its factorization.

22400161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7583.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 22400161 is about 4732.8808351785. The cubic root of 22400161 is about 281.8926246471.

Adding to 22400161 its reverse (16100422), we get a palindrome (38500583).

The spelling of 22400161 in words is "twenty-two million, four hundred thousand, one hundred sixty-one".