400705130 has 32 divisors (see below), whose sum is σ = 872798976. Its totient is φ = 129302784.

The previous prime is 400705099. The next prime is 400705133. The reversal of 400705130 is 31507004.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (400705133) 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, 167174 + ... + 169553.

It is an arithmetic number, because the mean of its divisors is an integer number (27274968).

Almost surely, 2^400705130 is an apocalyptic number.

400705130 is an abundant number, since it is smaller than the sum of its proper divisors (472093846).

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

400705130 is a wasteful number, since it uses less digits than its factorization.

400705130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336758.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 400705130 is about 20017.6204879601. The cubic root of 400705130 is about 737.2389990916.

The spelling of 400705130 in words is "four hundred million, seven hundred five thousand, one hundred thirty".