30386772 has 96 divisors (see below), whose sum is σ = 88623360. Its totient is φ = 8933760.

The previous prime is 30386771. The next prime is 30386779. The reversal of 30386772 is 27768303.

30386772 = T₂₉₃ + T₂₉₄ + ... + T₅₉₁.

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 (30386771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31822 + ... + 32762.

It is an arithmetic number, because the mean of its divisors is an integer number (923160).

Almost surely, 2^30386772 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 30386772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44311680).

30386772 is an abundant number, since it is smaller than the sum of its proper divisors (58236588).

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

30386772 is a wasteful number, since it uses less digits than its factorization.

30386772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990 (or 982 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 30386772 is about 5512.4197953349. The cubic root of 30386772 is about 312.0528756539.

The spelling of 30386772 in words is "thirty million, three hundred eighty-six thousand, seven hundred seventy-two".