400211340 has 48 divisors (see below), whose sum is σ = 1124293632. Its totient is φ = 106370496.

The previous prime is 400211311. The next prime is 400211347. The reversal of 400211340 is 43112004.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (400211347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7557 + ... + 29283.

It is an arithmetic number, because the mean of its divisors is an integer number (23422784).

Almost surely, 2^400211340 is an apocalyptic number.

It is an amenable number.

400211340 is an abundant number, since it is smaller than the sum of its proper divisors (724082292).

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

400211340 is a wasteful number, since it uses less digits than its factorization.

400211340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22046 (or 22044 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 400211340 is about 20005.2828023000. The cubic root of 400211340 is about 736.9360407507.

Adding to 400211340 its reverse (43112004), we get a palindrome (443323344).

The spelling of 400211340 in words is "four hundred million, two hundred eleven thousand, three hundred forty".