400323234 has 16 divisors (see below), whose sum is σ = 835457472. Its totient is φ = 127639248.

The previous prime is 400323223. The next prime is 400323241. The reversal of 400323234 is 432323004.

It is a self number, because there is not a number n which added to its sum of digits gives 400323234.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1450309 + ... + 1450584.

It is an arithmetic number, because the mean of its divisors is an integer number (52216092).

Almost surely, 2^400323234 is an apocalyptic number.

400323234 is an abundant number, since it is smaller than the sum of its proper divisors (435134238).

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

400323234 is a wasteful number, since it uses less digits than its factorization.

400323234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2900921.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 400323234 is about 20008.0792181558. The cubic root of 400323234 is about 737.0047136655.

Adding to 400323234 its reverse (432323004), we get a palindrome (832646238).

The spelling of 400323234 in words is "four hundred million, three hundred twenty-three thousand, two hundred thirty-four".