400530152 has 16 divisors (see below), whose sum is σ = 819266400. Its totient is φ = 182059120.

The previous prime is 400530133. The next prime is 400530157. The reversal of 400530152 is 251035004.

It is a super-2 number, since 2×400530152² = 320848805322286208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (400530157) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2275652 + ... + 2275827.

It is an arithmetic number, because the mean of its divisors is an integer number (51204150).

Almost surely, 2^400530152 is an apocalyptic number.

It is an amenable number.

400530152 is an abundant number, since it is smaller than the sum of its proper divisors (418736248).

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

400530152 is a wasteful number, since it uses less digits than its factorization.

400530152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4551496 (or 4551492 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 400530152 is about 20013.2494113275. The cubic root of 400530152 is about 737.1316721342.

Adding to 400530152 its reverse (251035004), we get a palindrome (651565156).

The spelling of 400530152 in words is "four hundred million, five hundred thirty thousand, one hundred fifty-two".