9902727280 has 40 divisors (see below), whose sum is σ = 24024881952. Its totient is φ = 3788868864.

The previous prime is 9902727229. The next prime is 9902727313. The reversal of 9902727280 is 827272099.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 9902727280.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2689119 + ... + 2692798.

Almost surely, 2^9902727280 is an apocalyptic number.

It is an amenable number.

9902727280 is an abundant number, since it is smaller than the sum of its proper divisors (14122154672).

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

9902727280 is a wasteful number, since it uses less digits than its factorization.

9902727280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5381953 (or 5381947 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 9902727280 is about 99512.4478645762. The cubic root of 9902727280 is about 2147.4263258371.

The spelling of 9902727280 in words is "nine billion, nine hundred two million, seven hundred twenty-seven thousand, two hundred eighty".