30139848 has 36 divisors (see below), whose sum is σ = 81755115. Its totient is φ = 10031088.

The previous prime is 30139817. The next prime is 30139849. The reversal of 30139848 is 84893103.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 15069924 + 15069924 = 3882^2 + 3882^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3882.

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

It is not an unprimeable number, because it can be changed into a prime (30139849) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 46261 + ... + 46907.

Almost surely, 2^30139848 is an apocalyptic number.

It is an amenable number.

30139848 is an abundant number, since it is smaller than the sum of its proper divisors (51615267).

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

30139848 is an equidigital number, since it uses as much as digits as its factorization.

30139848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 30139848 is about 5489.9770491324. The cubic root of 30139848 is about 311.2053247922.

The spelling of 30139848 in words is "thirty million, one hundred thirty-nine thousand, eight hundred forty-eight".