1777216404 has 24 divisors (see below), whose sum is σ = 4148915680. Its totient is φ = 592108704.

The previous prime is 1777216403. The next prime is 1777216411. The reversal of 1777216404 is 4046127771.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1777216403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11434 + ... + 60705.

Almost surely, 2^1777216404 is an apocalyptic number.

It is an amenable number.

1777216404 is an abundant number, since it is smaller than the sum of its proper divisors (2371699276).

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

1777216404 is a wasteful number, since it uses less digits than its factorization.

1777216404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74199 (or 74197 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 39.

The square root of 1777216404 is about 42157.0445358780. The cubic root of 1777216404 is about 1211.2862046495.

The spelling of 1777216404 in words is "one billion, seven hundred seventy-seven million, two hundred sixteen thousand, four hundred four".