30139164 has 144 divisors (see below), whose sum is σ = 91125216. Its totient is φ = 8363520.

The previous prime is 30139163. The next prime is 30139169. The reversal of 30139164 is 46193103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30139163) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 814554 + ... + 814590.

It is an arithmetic number, because the mean of its divisors is an integer number (632814).

Almost surely, 2^30139164 is an apocalyptic number.

30139164 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30139164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45562608).

30139164 is an abundant number, since it is smaller than the sum of its proper divisors (60986052).

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

30139164 is a wasteful number, since it uses less digits than its factorization.

30139164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 30139164 is about 5489.9147534365. The cubic root of 30139164 is about 311.2029705882.

It can be divided in two parts, 30139 and 164, that added together give a palindrome (30303).

The spelling of 30139164 in words is "thirty million, one hundred thirty-nine thousand, one hundred sixty-four".