400023234 has 24 divisors (see below), whose sum is σ = 933388092. Its totient is φ = 123084000.

The previous prime is 400023223. The next prime is 400023257. The reversal of 400023234 is 432320004.

400023234 is a `hidden beast` number, since 400 + 0 + 232 + 34 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 396209025 + 3814209 = 19905^2 + 1953^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 854517 + ... + 854984.

Almost surely, 2^400023234 is an apocalyptic number.

400023234 is an abundant number, since it is smaller than the sum of its proper divisors (533364858).

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

400023234 is a wasteful number, since it uses less digits than its factorization.

400023234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709522 (or 1709519 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 400023234 is about 20000.5808415656. The cubic root of 400023234 is about 736.8205652498.

Adding to 400023234 its reverse (432320004), we get a palindrome (832343238).

The spelling of 400023234 in words is "four hundred million, twenty-three thousand, two hundred thirty-four".