28763753890 has 8 divisors (see below), whose sum is σ = 51774757020. Its totient is φ = 11505501552.

The previous prime is 28763753873. The next prime is 28763753897. The reversal of 28763753890 is 9835736782.

It can be written as a sum of positive squares in 2 ways, for example, as 28005687801 + 758066089 = 167349^2 + 27533^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28763753897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1438187685 + ... + 1438187704.

Almost surely, 2^28763753890 is an apocalyptic number.

28763753890 is a deficient number, since it is larger than the sum of its proper divisors (23011003130).

28763753890 is a wasteful number, since it uses less digits than its factorization.

28763753890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2876375396.

The product of its (nonzero) digits is 15240960, while the sum is 58.

The spelling of 28763753890 in words is "twenty-eight billion, seven hundred sixty-three million, seven hundred fifty-three thousand, eight hundred ninety".