28970609040 has 100 divisors (see below), whose sum is σ = 100619239644. Its totient is φ = 7725494016.

The previous prime is 28970609033. The next prime is 28970609069. The reversal of 28970609040 is 4090607982.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20047161744 + 8923447296 = 141588^2 + 94464^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

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 19 ways as a sum of consecutive naturals, for example, 2228907 + ... + 2241866.

Almost surely, 2^28970609040 is an apocalyptic number.

28970609040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28970609040 is an abundant number, since it is smaller than the sum of its proper divisors (71648630604).

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

28970609040 is a wasteful number, since it uses less digits than its factorization.

28970609040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4470798 (or 4470783 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 28970609040 in words is "twenty-eight billion, nine hundred seventy million, six hundred nine thousand, forty".