400211320 has 32 divisors (see below), whose sum is σ = 921420720. Its totient is φ = 156360960.

The previous prime is 400211311. The next prime is 400211347. The reversal of 400211320 is 23112004.

It is a super-2 number, since 2×400211320² = 320338201312284800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400211320.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 114621 + ... + 118060.

Almost surely, 2^400211320 is an apocalyptic number.

400211320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400211320 is an abundant number, since it is smaller than the sum of its proper divisors (521209400).

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

400211320 is a wasteful number, since it uses less digits than its factorization.

400211320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232735 (or 232731 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 400211320 is about 20005.2823024320. The cubic root of 400211320 is about 736.9360284749.

Adding to 400211320 its reverse (23112004), we get a palindrome (423323324).

The spelling of 400211320 in words is "four hundred million, two hundred eleven thousand, three hundred twenty".