1928917028 has 6 divisors (see below), whose sum is σ = 3375604806. Its totient is φ = 964458512.

The previous prime is 1928917027. The next prime is 1928917079. The reversal of 1928917028 is 8207198291.

It can be written as a sum of positive squares in only one way, i.e., 1821753124 + 107163904 = 42682^2 + 10352^2 .

It is not an unprimeable number, because it can be changed into a prime (1928917027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 241114625 + ... + 241114632.

It is an arithmetic number, because the mean of its divisors is an integer number (562600801).

Almost surely, 2^1928917028 is an apocalyptic number.

It is an amenable number.

1928917028 is a deficient number, since it is larger than the sum of its proper divisors (1446687778).

1928917028 is a wasteful number, since it uses less digits than its factorization.

1928917028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482229261 (or 482229259 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 47.

The square root of 1928917028 is about 43919.4379290082. The cubic root of 1928917028 is about 1244.8141479430.

The spelling of 1928917028 in words is "one billion, nine hundred twenty-eight million, nine hundred seventeen thousand, twenty-eight".