406511320 has 32 divisors (see below), whose sum is σ = 929650320. Its totient is φ = 159937920.

The previous prime is 406511291. The next prime is 406511321. The reversal of 406511320 is 23115604.

It is a junction number, because it is equal to n+sod(n) for n = 406511291 and 406511300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406511321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80862 + ... + 85741.

Almost surely, 2^406511320 is an apocalyptic number.

406511320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

406511320 is an abundant number, since it is smaller than the sum of its proper divisors (523139000).

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

406511320 is a wasteful number, since it uses less digits than its factorization.

406511320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166675 (or 166671 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 406511320 is about 20162.1258799760. The cubic root of 406511320 is about 740.7827850074.

Adding to 406511320 its reverse (23115604), we get a palindrome (429626924).

The spelling of 406511320 in words is "four hundred six million, five hundred eleven thousand, three hundred twenty".