400166080 has 28 divisors (see below), whose sum is σ = 952896240. Its totient is φ = 160066304.

The previous prime is 400166069. The next prime is 400166089. The reversal of 400166080 is 80661004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400166089) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 624940 + ... + 625579.

Almost surely, 2^400166080 is an apocalyptic number.

400166080 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400166080 is an abundant number, since it is smaller than the sum of its proper divisors (552730160).

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

400166080 is a wasteful number, since it uses less digits than its factorization.

400166080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250536 (or 1250526 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 400166080 is about 20004.1515691118. The cubic root of 400166080 is about 736.9082596100.

The spelling of 400166080 in words is "four hundred million, one hundred sixty-six thousand, eighty".