406250000 has 100 divisors (see below), whose sum is σ = 1059570204. Its totient is φ = 150000000.

The previous prime is 406249981. The next prime is 406250041. The reversal of 406250000 is 52604.

It can be written as a sum of positive squares in 10 ways, for example, as 952576 + 405297424 = 976^2 + 20132^2 .

It is a tau number, because it is divible by the number of its divisors (100).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31249994 + ... + 31250006.

Almost surely, 2^406250000 is an apocalyptic number.

406250000 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 406250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (529785102).

406250000 is an abundant number, since it is smaller than the sum of its proper divisors (653320204).

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

406250000 is an frugal number, since it uses more digits than its factorization.

406250000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66 (or 20 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 406250000 is about 20155.6443707464. The cubic root of 406250000 is about 740.6240171018.

The spelling of 406250000 in words is "four hundred six million, two hundred fifty thousand".