9428787928 has 32 divisors (see below), whose sum is σ = 21393050400. Its totient is φ = 3803208192.

The previous prime is 9428787887. The next prime is 9428787941. The reversal of 9428787928 is 8297878249.

It is a self number, because there is not a number n which added to its sum of digits gives 9428787928.

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, 4951143 + ... + 4953046.

It is an arithmetic number, because the mean of its divisors is an integer number (668532825).

Almost surely, 2^9428787928 is an apocalyptic number.

It is an amenable number.

9428787928 is an abundant number, since it is smaller than the sum of its proper divisors (11964262472).

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

9428787928 is a wasteful number, since it uses less digits than its factorization.

9428787928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9904219 (or 9904215 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 64.

The square root of 9428787928 is about 97101.9460567089. The cubic root of 9428787928 is about 2112.6065529766.

The spelling of 9428787928 in words is "nine billion, four hundred twenty-eight million, seven hundred eighty-seven thousand, nine hundred twenty-eight".