22400402 has 8 divisors (see below), whose sum is σ = 33670512. Its totient is φ = 11176900.

The previous prime is 22400369. The next prime is 22400419. The reversal of 22400402 is 20400422.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10424 + ... + 12387.

It is an arithmetic number, because the mean of its divisors is an integer number (4208814).

Almost surely, 2^22400402 is an apocalyptic number.

22400402 is a deficient number, since it is larger than the sum of its proper divisors (11270110).

22400402 is a wasteful number, since it uses less digits than its factorization.

22400402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23304.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 22400402 is about 4732.9062952905. The cubic root of 22400402 is about 281.8936355904.

Adding to 22400402 its reverse (20400422), we get a palindrome (42800824).

The spelling of 22400402 in words is "twenty-two million, four hundred thousand, four hundred two".