30028950 has 72 divisors (see below), whose sum is σ = 92212848. Its totient is φ = 6863040.

The previous prime is 30028939. The next prime is 30028951. The reversal of 30028950 is 5982003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30028951) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1617 + ... + 7916.

It is an arithmetic number, because the mean of its divisors is an integer number (1280734).

Almost surely, 2^30028950 is an apocalyptic number.

30028950 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30028950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46106424).

30028950 is an abundant number, since it is smaller than the sum of its proper divisors (62183898).

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

30028950 is a wasteful number, since it uses less digits than its factorization.

30028950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9558 (or 9550 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 30028950 is about 5479.8676991329. The cubic root of 30028950 is about 310.8231677745.

The spelling of 30028950 in words is "thirty million, twenty-eight thousand, nine hundred fifty".