400134402200 has 96 divisors (see below), whose sum is σ = 1006251481200. Its totient is φ = 147096552960.

The previous prime is 400134402131. The next prime is 400134402221. The reversal of 400134402200 is 2204431004.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 259379 + ... + 931421.

Almost surely, 2^400134402200 is an apocalyptic number.

400134402200 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400134402200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (503125740600).

400134402200 is an abundant number, since it is smaller than the sum of its proper divisors (606117079000).

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

400134402200 is a wasteful number, since it uses less digits than its factorization.

400134402200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672301 (or 672292 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 400134402200 its reverse (2204431004), we get a palindrome (402338833204).

The spelling of 400134402200 in words is "four hundred billion, one hundred thirty-four million, four hundred two thousand, two hundred".