406338216 has 32 divisors (see below), whose sum is σ = 1075602240. Its totient is φ = 127478528.

The previous prime is 406338197. The next prime is 406338223. The reversal of 406338216 is 612833604.

It is a super-2 number, since 2×406338216² = 330221491564125312, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497556 + ... + 498371.

It is an arithmetic number, because the mean of its divisors is an integer number (33612570).

Almost surely, 2^406338216 is an apocalyptic number.

It is an amenable number.

406338216 is an abundant number, since it is smaller than the sum of its proper divisors (669264024).

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

406338216 is a wasteful number, since it uses less digits than its factorization.

406338216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995953 (or 995949 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 406338216 is about 20157.8326215891. The cubic root of 406338216 is about 740.6776213355.

The spelling of 406338216 in words is "four hundred six million, three hundred thirty-eight thousand, two hundred sixteen".