30149250 has 64 divisors (see below), whose sum is σ = 76602240. Its totient is φ = 7896000.

The previous prime is 30149237. The next prime is 30149261. The reversal of 30149250 is 5294103.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 30149250.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45421 + ... + 46079.

It is an arithmetic number, because the mean of its divisors is an integer number (1196910).

Almost surely, 2^30149250 is an apocalyptic number.

30149250 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 30149250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38301120).

30149250 is an abundant number, since it is smaller than the sum of its proper divisors (46452990).

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

30149250 is a wasteful number, since it uses less digits than its factorization.

30149250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 30149250 is about 5490.8332700966. The cubic root of 30149250 is about 311.2376811627.

The spelling of 30149250 in words is "thirty million, one hundred forty-nine thousand, two hundred fifty".