400620026 has 16 divisors (see below), whose sum is σ = 627554304. Its totient is φ = 191449104.

The previous prime is 400620023. The next prime is 400620041. The reversal of 400620026 is 620026004.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400620023) 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 7 ways as a sum of consecutive naturals, for example, 73880 + ... + 79116.

It is an arithmetic number, because the mean of its divisors is an integer number (39222144).

Almost surely, 2^400620026 is an apocalyptic number.

400620026 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

400620026 is a deficient number, since it is larger than the sum of its proper divisors (226934278).

400620026 is a wasteful number, since it uses less digits than its factorization.

400620026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6925.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 400620026 is about 20015.4946478972. The cubic root of 400620026 is about 737.1868024134.

The spelling of 400620026 in words is "four hundred million, six hundred twenty thousand, twenty-six".