102787190828 has 18 divisors (see below), whose sum is σ = 209245353156. Its totient is φ = 44051653128.

The previous prime is 102787190819. The next prime is 102787190851. The reversal of 102787190828 is 828091787201.

It is a self number, because there is not a number n which added to its sum of digits gives 102787190828.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 262212026 + ... + 262212417.

It is an arithmetic number, because the mean of its divisors is an integer number (11624741842).

Almost surely, 2^102787190828 is an apocalyptic number.

It is an amenable number.

102787190828 is an abundant number, since it is smaller than the sum of its proper divisors (106458162328).

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

102787190828 is a wasteful number, since it uses less digits than its factorization.

102787190828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524424461 (or 524424452 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 53.

The spelling of 102787190828 in words is "one hundred two billion, seven hundred eighty-seven million, one hundred ninety thousand, eight hundred twenty-eight".