400512010 has 32 divisors (see below), whose sum is σ = 765232272. Its totient is φ = 150405120.

The previous prime is 400511981. The next prime is 400512029. The reversal of 400512010 is 10215004.

It can be written as a sum of positive squares in 8 ways, for example, as 189420169 + 211091841 = 13763^2 + 14529^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70890 + ... + 76330.

Almost surely, 2^400512010 is an apocalyptic number.

400512010 is a deficient number, since it is larger than the sum of its proper divisors (364720262).

400512010 is a wasteful number, since it uses less digits than its factorization.

400512010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5898.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 400512010 is about 20012.7961564595. The cubic root of 400512010 is about 737.1205425146.

Adding to 400512010 its reverse (10215004), we get a palindrome (410727014).

The spelling of 400512010 in words is "four hundred million, five hundred twelve thousand, ten".