845415404928 has 128 divisors (see below), whose sum is σ = 2517231765600. Its totient is φ = 279311155200.

The previous prime is 845415404923. The next prime is 845415404941. The reversal of 845415404928 is 829404514548.

845415404928 is a `hidden beast` number, since 8 + 4 + 5 + 4 + 1 + 540 + 4 + 92 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845415404923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 691873 + ... + 1472928.

Almost surely, 2^845415404928 is an apocalyptic number.

It is an amenable number.

845415404928 is an abundant number, since it is smaller than the sum of its proper divisors (1671816360672).

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

845415404928 is a wasteful number, since it uses less digits than its factorization.

845415404928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2164937 (or 2164919 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 54.

The spelling of 845415404928 in words is "eight hundred forty-five billion, four hundred fifteen million, four hundred four thousand, nine hundred twenty-eight".