404873780 has 12 divisors (see below), whose sum is σ = 850234980. Its totient is φ = 161949504.

The previous prime is 404873773. The next prime is 404873797. The reversal of 404873780 is 87378404.

It can be written as a sum of positive squares in 2 ways, for example, as 118113424 + 286760356 = 10868^2 + 16934^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 10121825 + ... + 10121864.

It is an arithmetic number, because the mean of its divisors is an integer number (70852915).

Almost surely, 2^404873780 is an apocalyptic number.

It is an amenable number.

404873780 is an abundant number, since it is smaller than the sum of its proper divisors (445361200).

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

404873780 is a wasteful number, since it uses less digits than its factorization.

404873780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20243698 (or 20243696 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 41.

The square root of 404873780 is about 20121.4755920136. The cubic root of 404873780 is about 739.7867537482.

The spelling of 404873780 in words is "four hundred four million, eight hundred seventy-three thousand, seven hundred eighty".