28744446030 has 32 divisors (see below), whose sum is σ = 69086556288. Its totient is φ = 7654087200.

The previous prime is 28744446019. The next prime is 28744446037. The reversal of 28744446030 is 3064444782.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28744446037) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 672576 + ... + 714035.

It is an arithmetic number, because the mean of its divisors is an integer number (2158954884).

Almost surely, 2^28744446030 is an apocalyptic number.

28744446030 is an abundant number, since it is smaller than the sum of its proper divisors (40342110258).

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

28744446030 is a wasteful number, since it uses less digits than its factorization.

28744446030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387312.

The product of its (nonzero) digits is 516096, while the sum is 42.

The spelling of 28744446030 in words is "twenty-eight billion, seven hundred forty-four million, four hundred forty-six thousand, thirty".