406470240 has 288 divisors, whose sum is σ = 1539772416. Its totient is φ = 96814080.

The previous prime is 406470227. The next prime is 406470257. The reversal of 406470240 is 42074604.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1061089 + ... + 1061471.

It is an arithmetic number, because the mean of its divisors is an integer number (5346432).

Almost surely, 2^406470240 is an apocalyptic number.

406470240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 406470240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (769886208).

406470240 is an abundant number, since it is smaller than the sum of its proper divisors (1133302176).

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

406470240 is a wasteful number, since it uses less digits than its factorization.

406470240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 406470240 is about 20161.1071124579. The cubic root of 406470240 is about 740.7578308995.

The spelling of 406470240 in words is "four hundred six million, four hundred seventy thousand, two hundred forty".