400033133400 has 96 divisors (see below), whose sum is σ = 1261121515200. Its totient is φ = 104867433600.

The previous prime is 400033133351. The next prime is 400033133441. The reversal of 400033133400 is 4331330004.

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, 5614786 + ... + 5685585.

It is an arithmetic number, because the mean of its divisors is an integer number (13136682450).

Almost surely, 2^400033133400 is an apocalyptic number.

400033133400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400033133400 is an abundant number, since it is smaller than the sum of its proper divisors (861088381800).

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

400033133400 is a wasteful number, since it uses less digits than its factorization.

400033133400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11300449 (or 11300440 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 400033133400 its reverse (4331330004), we get a palindrome (404364463404).

The spelling of 400033133400 in words is "four hundred billion, thirty-three million, one hundred thirty-three thousand, four hundred".