22400032 has 12 divisors (see below), whose sum is σ = 44100126. Its totient is φ = 11200000.

The previous prime is 22400029. The next prime is 22400039. The reversal of 22400032 is 23000422.

It can be written as a sum of positive squares in only one way, i.e., 15023376 + 7376656 = 3876^2 + 2716^2 .

It is a super-2 number, since 2×22400032² = 1003522867202048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22399985 and 22400021.

It is not an unprimeable number, because it can be changed into a prime (22400039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349969 + ... + 350032.

Almost surely, 2^22400032 is an apocalyptic number.

It is an amenable number.

22400032 is a deficient number, since it is larger than the sum of its proper divisors (21700094).

22400032 is an equidigital number, since it uses as much as digits as its factorization.

22400032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700011 (or 700003 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 22400032 is about 4732.8672070955. The cubic root of 22400032 is about 281.8920835168.

Adding to 22400032 its reverse (23000422), we get a palindrome (45400454).

The spelling of 22400032 in words is "twenty-two million, four hundred thousand, thirty-two".