400064620 has 12 divisors (see below), whose sum is σ = 840135744. Its totient is φ = 160025840.

The previous prime is 400064597. The next prime is 400064653. The reversal of 400064620 is 26460004.

It is a junction number, because it is equal to n+sod(n) for n = 400064591 and 400064600.

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 3 ways as a sum of consecutive naturals, for example, 10001596 + ... + 10001635.

It is an arithmetic number, because the mean of its divisors is an integer number (70011312).

Almost surely, 2^400064620 is an apocalyptic number.

It is an amenable number.

400064620 is an abundant number, since it is smaller than the sum of its proper divisors (440071124).

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

400064620 is a wasteful number, since it uses less digits than its factorization.

400064620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20003240 (or 20003238 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 400064620 is about 20001.6154347593. The cubic root of 400064620 is about 736.8459746109.

The spelling of 400064620 in words is "four hundred million, sixty-four thousand, six hundred twenty".