406454928 has 80 divisors (see below), whose sum is σ = 1150212096. Its totient is φ = 122657920.

The previous prime is 406454927. The next prime is 406454947. The reversal of 406454928 is 829454604.

It is a self number, because there is not a number n which added to its sum of digits gives 406454928.

It is not an unprimeable number, because it can be changed into a prime (406454927) 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, 137401 + ... + 140327.

Almost surely, 2^406454928 is an apocalyptic number.

406454928 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 406454928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (575106048).

406454928 is an abundant number, since it is smaller than the sum of its proper divisors (743757168).

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

406454928 is a wasteful number, since it uses less digits than its factorization.

406454928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3212 (or 3206 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 406454928 is about 20160.7273678308. The cubic root of 406454928 is about 740.7485291719.

The spelling of 406454928 in words is "four hundred six million, four hundred fifty-four thousand, nine hundred twenty-eight".