400532530 has 32 divisors (see below), whose sum is σ = 741210624. Its totient is φ = 155748096.

The previous prime is 400532507. The next prime is 400532537. The reversal of 400532530 is 35235004.

It is not an unprimeable number, because it can be changed into a prime (400532537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93802 + ... + 97978.

It is an arithmetic number, because the mean of its divisors is an integer number (23162832).

Almost surely, 2^400532530 is an apocalyptic number.

400532530 is a deficient number, since it is larger than the sum of its proper divisors (340678094).

400532530 is a wasteful number, since it uses less digits than its factorization.

400532530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4450.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 400532530 is about 20013.3088218815. The cubic root of 400532530 is about 737.1331309471.

Adding to 400532530 its reverse (35235004), we get a palindrome (435767534).

The spelling of 400532530 in words is "four hundred million, five hundred thirty-two thousand, five hundred thirty".