1928042788 has 48 divisors (see below), whose sum is σ = 3958012800. Its totient is φ = 821426592.

The previous prime is 1928042759. The next prime is 1928042791. The reversal of 1928042788 is 8872408291.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233295 + ... + 241417.

It is an arithmetic number, because the mean of its divisors is an integer number (82458600).

Almost surely, 2^1928042788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1928042788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1979006400).

1928042788 is an abundant number, since it is smaller than the sum of its proper divisors (2029970012).

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

1928042788 is a wasteful number, since it uses less digits than its factorization.

1928042788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8321 (or 8305 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 49.

The square root of 1928042788 is about 43909.4840324958. The cubic root of 1928042788 is about 1244.6260578113.

The spelling of 1928042788 in words is "one billion, nine hundred twenty-eight million, forty-two thousand, seven hundred eighty-eight".