28743030 has 48 divisors (see below), whose sum is σ = 76012560. Its totient is φ = 7533504.

The previous prime is 28742977. The next prime is 28743037. The reversal of 28743030 is 3034782.

It is a junction number, because it is equal to n+sod(n) for n = 28742985 and 28743003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28743037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2604 + ... + 8016.

It is an arithmetic number, because the mean of its divisors is an integer number (1583595).

Almost surely, 2^28743030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28743030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38006280).

28743030 is an abundant number, since it is smaller than the sum of its proper divisors (47269530).

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

28743030 is a wasteful number, since it uses less digits than its factorization.

28743030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5485 (or 5482 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 28743030 is about 5361.2526521327. The cubic root of 28743030 is about 306.3215254290.

The spelling of 28743030 in words is "twenty-eight million, seven hundred forty-three thousand, thirty".