400642626 has 16 divisors (see below), whose sum is σ = 843458400. Its totient is φ = 126518688.

The previous prime is 400642601. The next prime is 400642637. The reversal of 400642626 is 626246004.

It is a junction number, because it is equal to n+sod(n) for n = 400642593 and 400642602.

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 7 ways as a sum of consecutive naturals, for example, 1757091 + ... + 1757318.

It is an arithmetic number, because the mean of its divisors is an integer number (52716150).

Almost surely, 2^400642626 is an apocalyptic number.

400642626 is an abundant number, since it is smaller than the sum of its proper divisors (442815774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400642626 is a wasteful number, since it uses less digits than its factorization.

400642626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3514433.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 400642626 is about 20016.0592025503. The cubic root of 400642626 is about 737.2006643503.

The spelling of 400642626 in words is "four hundred million, six hundred forty-two thousand, six hundred twenty-six".