400024022 has 8 divisors (see below), whose sum is σ = 600123216. Its totient is φ = 199982952.

The previous prime is 400024021. The next prime is 400024039. The reversal of 400024022 is 220420004.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 400023988 and 400024006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400024021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13463 + ... + 31325.

It is an arithmetic number, because the mean of its divisors is an integer number (75015402).

Almost surely, 2^400024022 is an apocalyptic number.

400024022 is a deficient number, since it is larger than the sum of its proper divisors (200099194).

400024022 is a wasteful number, since it uses less digits than its factorization.

400024022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29062.

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

The square root of 400024022 is about 20000.6005409838. The cubic root of 400024022 is about 736.8210490669.

Adding to 400024022 its reverse (220420004), we get a palindrome (620444026).

The spelling of 400024022 in words is "four hundred million, twenty-four thousand, twenty-two".