40176820 has 24 divisors (see below), whose sum is σ = 86653224. Its totient is φ = 15636096.

The previous prime is 40176779. The next prime is 40176823. The reversal of 40176820 is 2867104.

It can be written as a sum of positive squares in 4 ways, for example, as 25948836 + 14227984 = 5094^2 + 3772^2 .

It is a super-2 number, since 2×40176820² = 3228353730624800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40176823) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 26407 + ... + 27886.

It is an arithmetic number, because the mean of its divisors is an integer number (3610551).

Almost surely, 2^40176820 is an apocalyptic number.

It is an amenable number.

40176820 is an abundant number, since it is smaller than the sum of its proper divisors (46476404).

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

40176820 is a wasteful number, since it uses less digits than its factorization.

40176820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54339 (or 54337 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 40176820 is about 6338.5187544094. The cubic root of 40176820 is about 342.4983785243.

The spelling of 40176820 in words is "forty million, one hundred seventy-six thousand, eight hundred twenty".