400030522 has 32 divisors (see below), whose sum is σ = 653950080. Its totient is φ = 182891520.

The previous prime is 400030511. The next prime is 400030529. The reversal of 400030522 is 225030004.

It is a junction number, because it is equal to n+sod(n) for n = 400030496 and 400030505.

It is not an unprimeable number, because it can be changed into a prime (400030529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149803 + ... + 152449.

It is an arithmetic number, because the mean of its divisors is an integer number (20435940).

Almost surely, 2^400030522 is an apocalyptic number.

400030522 is a deficient number, since it is larger than the sum of its proper divisors (253919558).

400030522 is a wasteful number, since it uses less digits than its factorization.

400030522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 400030522 is about 20000.7630354444. The cubic root of 400030522 is about 736.8250399197.

Adding to 400030522 its reverse (225030004), we get a palindrome (625060526).

The spelling of 400030522 in words is "four hundred million, thirty thousand, five hundred twenty-two".