30347388 has 72 divisors (see below), whose sum is σ = 80510976. Its totient is φ = 9626400.

The previous prime is 30347381. The next prime is 30347399. The reversal of 30347388 is 88374303.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30347381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79045 + ... + 79427.

It is an arithmetic number, because the mean of its divisors is an integer number (1118208).

Almost surely, 2^30347388 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 30347388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40255488).

30347388 is an abundant number, since it is smaller than the sum of its proper divisors (50163588).

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

30347388 is a wasteful number, since it uses less digits than its factorization.

30347388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 30347388 is about 5508.8463402059. The cubic root of 30347388 is about 311.9180011336.

The spelling of 30347388 in words is "thirty million, three hundred forty-seven thousand, three hundred eighty-eight".