30139027 has 4 divisors (see below), whose sum is σ = 30153816. Its totient is φ = 30124240.

The previous prime is 30139019. The next prime is 30139051. The reversal of 30139027 is 72093103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72093103 = 59 ⋅1221917.

It is a cyclic number.

It is not a de Polignac number, because 30139027 - 2³ = 30139019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30138992 and 30139010.

It is not an unprimeable number, because it can be changed into a prime (30139007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3733 + ... + 8614.

It is an arithmetic number, because the mean of its divisors is an integer number (7538454).

Almost surely, 2^30139027 is an apocalyptic number.

30139027 is a deficient number, since it is larger than the sum of its proper divisors (14789).

30139027 is a wasteful number, since it uses less digits than its factorization.

30139027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14788.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 30139027 is about 5489.9022759973. The cubic root of 30139027 is about 311.2024990547.

The spelling of 30139027 in words is "thirty million, one hundred thirty-nine thousand, twenty-seven".