28734030 has 96 divisors (see below), whose sum is σ = 82555200. Its totient is φ = 6888960.

The previous prime is 28733987. The next prime is 28734031. The reversal of 28734030 is 3043782.

It is a junction number, because it is equal to n+sod(n) for n = 28733985 and 28734003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28734031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47671 + ... + 48269.

It is an arithmetic number, because the mean of its divisors is an integer number (859950).

Almost surely, 2^28734030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28734030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41277600).

28734030 is an abundant number, since it is smaller than the sum of its proper divisors (53821170).

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

28734030 is a wasteful number, since it uses less digits than its factorization.

28734030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666 (or 663 counting only the distinct ones).

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

The square root of 28734030 is about 5360.4132303396. The cubic root of 28734030 is about 306.2895503551.

It can be divided in two parts, 2873 and 4030, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 28734030 in words is "twenty-eight million, seven hundred thirty-four thousand, thirty".