2104991928 has 64 divisors (see below), whose sum is σ = 6296992800. Its totient is φ = 647688960.

The previous prime is 2104991927. The next prime is 2104991939. The reversal of 2104991928 is 8291994012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104991927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372013 + ... + 377628.

Almost surely, 2^2104991928 is an apocalyptic number.

It is an amenable number.

2104991928 is an abundant number, since it is smaller than the sum of its proper divisors (4192000872).

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

2104991928 is a wasteful number, since it uses less digits than its factorization.

2104991928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749669 (or 749659 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 2104991928 is about 45880.1910196547. The cubic root of 2104991928 is about 1281.5930539398.

The spelling of 2104991928 in words is "two billion, one hundred four million, nine hundred ninety-one thousand, nine hundred twenty-eight".