223400402 has 8 divisors (see below), whose sum is σ = 335182512. Its totient is φ = 111672900.

The previous prime is 223400389. The next prime is 223400407. The reversal of 223400402 is 204004322.

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

It is a super-2 number, since 2×223400402² = 99815479227523208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (223400407) by changing a digit.

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, 1124 + ... + 21167.

It is an arithmetic number, because the mean of its divisors is an integer number (41897814).

Almost surely, 2^223400402 is an apocalyptic number.

223400402 is a deficient number, since it is larger than the sum of its proper divisors (111782110).

223400402 is a wasteful number, since it uses less digits than its factorization.

223400402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27304.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 223400402 is about 14946.5849611207. The cubic root of 223400402 is about 606.7754254288.

Adding to 223400402 its reverse (204004322), we get a palindrome (427404724).

The spelling of 223400402 in words is "two hundred twenty-three million, four hundred thousand, four hundred two".