407485728 has 288 divisors, whose sum is σ = 1348401600. Its totient is φ = 120185856.

The previous prime is 407485721. The next prime is 407485739. The reversal of 407485728 is 827584704.

407485728 is a `hidden beast` number, since 4 + 0 + 74 + 8 + 572 + 8 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (407485721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2931483 + ... + 2931621.

It is an arithmetic number, because the mean of its divisors is an integer number (4681950).

Almost surely, 2^407485728 is an apocalyptic number.

407485728 is a gapful number since it is divisible by the number (48) 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 407485728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (674200800).

407485728 is an abundant number, since it is smaller than the sum of its proper divisors (940915872).

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

407485728 is a wasteful number, since it uses less digits than its factorization.

407485728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 45.

The square root of 407485728 is about 20186.2757337752. The cubic root of 407485728 is about 741.3741983868.

The spelling of 407485728 in words is "four hundred seven million, four hundred eighty-five thousand, seven hundred twenty-eight".