1973772828 has 72 divisors (see below), whose sum is σ = 5464957680. Its totient is φ = 597864960.

The previous prime is 1973772803. The next prime is 1973772859. The reversal of 1973772828 is 8282773791.

1973772828 is a `hidden beast` number, since 197 + 377 + 2 + 82 + 8 = 666.

It is a super-2 number, since 2×1973772828² = 7791558353102235168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37858 + ... + 73353.

It is an arithmetic number, because the mean of its divisors is an integer number (75902190).

Almost surely, 2^1973772828 is an apocalyptic number.

1973772828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1973772828 is an abundant number, since it is smaller than the sum of its proper divisors (3491184852).

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

1973772828 is a wasteful number, since it uses less digits than its factorization.

1973772828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111267 (or 111262 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 54.

The square root of 1973772828 is about 44427.1631774976. The cubic root of 1973772828 is about 1254.3894381971.

The spelling of 1973772828 in words is "one billion, nine hundred seventy-three million, seven hundred seventy-two thousand, eight hundred twenty-eight".