400210512 has 80 divisors (see below), whose sum is σ = 1140635328. Its totient is φ = 120130560.

The previous prime is 400210507. The next prime is 400210529. The reversal of 400210512 is 215012004.

It is a junction number, because it is equal to n+sod(n) for n = 400210491 and 400210500.

It is a congruent number.

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, 17763 + ... + 33405.

Almost surely, 2^400210512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400210512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (570317664).

400210512 is an abundant number, since it is smaller than the sum of its proper divisors (740424816).

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

400210512 is a wasteful number, since it uses less digits than its factorization.

400210512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15708 (or 15702 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 400210512 is about 20005.2621077555. The cubic root of 400210512 is about 736.9355325330.

Adding to 400210512 its reverse (215012004), we get a palindrome (615222516).

The spelling of 400210512 in words is "four hundred million, two hundred ten thousand, five hundred twelve".