30149616 has 80 divisors (see below), whose sum is σ = 90533888. Its totient is φ = 8467200.

The previous prime is 30149591. The next prime is 30149617. The reversal of 30149616 is 61694103.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30149617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19761 + ... + 21231.

Almost surely, 2^30149616 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 30149616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45266944).

30149616 is an abundant number, since it is smaller than the sum of its proper divisors (60384272).

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

30149616 is a wasteful number, since it uses less digits than its factorization.

30149616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550 (or 1544 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 30149616 is about 5490.8665982703. The cubic root of 30149616 is about 311.2389405919.

The spelling of 30149616 in words is "thirty million, one hundred forty-nine thousand, six hundred sixteen".