28748974900 has 18 divisors (see below), whose sum is σ = 62385275750. Its totient is φ = 11499589920.

The previous prime is 28748974847. The next prime is 28748974937. The reversal of 28748974900 is 947984782.

It can be written as a sum of positive squares in 3 ways, for example, as 488675236 + 28260299664 = 22106^2 + 168108^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 143744775 + ... + 143744974.

Almost surely, 2^28748974900 is an apocalyptic number.

28748974900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28748974900 is an abundant number, since it is smaller than the sum of its proper divisors (33636300850).

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

28748974900 is a wasteful number, since it uses less digits than its factorization.

28748974900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287489763 (or 287489756 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 58.

The spelling of 28748974900 in words is "twenty-eight billion, seven hundred forty-eight million, nine hundred seventy-four thousand, nine hundred".