400526220 has 48 divisors (see below), whose sum is σ = 1140491520. Its totient is φ = 104995776.

The previous prime is 400526207. The next prime is 400526227. The reversal of 400526220 is 22625004.

It is not an unprimeable number, because it can be changed into a prime (400526227) 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, 53032 + ... + 60111.

It is an arithmetic number, because the mean of its divisors is an integer number (23760240).

Almost surely, 2^400526220 is an apocalyptic number.

It is an amenable number.

400526220 is an abundant number, since it is smaller than the sum of its proper divisors (739965300).

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

400526220 is a wasteful number, since it uses less digits than its factorization.

400526220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113214 (or 113212 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 400526220 is about 20013.1511761641. The cubic root of 400526220 is about 737.1292599885.

The spelling of 400526220 in words is "four hundred million, five hundred twenty-six thousand, two hundred twenty".