22400434 has 16 divisors (see below), whose sum is σ = 38475648. Its totient is φ = 9581472.

The previous prime is 22400431. The next prime is 22400447. The reversal of 22400434 is 43400422.

It is not an unprimeable number, because it can be changed into a prime (22400431) 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, 7822 + ... + 10294.

It is an arithmetic number, because the mean of its divisors is an integer number (2404728).

Almost surely, 2^22400434 is an apocalyptic number.

22400434 is a deficient number, since it is larger than the sum of its proper divisors (16075214).

22400434 is a wasteful number, since it uses less digits than its factorization.

22400434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3129.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 22400434 is about 4732.9096758759. The cubic root of 22400434 is about 281.8937698230.

Adding to 22400434 its reverse (43400422), we get a palindrome (65800856).

The spelling of 22400434 in words is "twenty-two million, four hundred thousand, four hundred thirty-four".