30196728 has 96 divisors (see below), whose sum is σ = 85962240. Its totient is φ = 9564480.

The previous prime is 30196711. The next prime is 30196741. The reversal of 30196728 is 82769103.

30196728 = T₂₅₇ + T₂₅₈ + ... + T₅₈₂.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 30196692 and 30196701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 185175 + ... + 185337.

It is an arithmetic number, because the mean of its divisors is an integer number (895440).

Almost surely, 2^30196728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30196728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42981120).

30196728 is an abundant number, since it is smaller than the sum of its proper divisors (55765512).

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

30196728 is a wasteful number, since it uses less digits than its factorization.

30196728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 30196728 is about 5495.1549568688. The cubic root of 30196728 is about 311.4009709368.

The spelling of 30196728 in words is "thirty million, one hundred ninety-six thousand, seven hundred twenty-eight".