30139058 has 4 divisors (see below), whose sum is σ = 45208590. Its totient is φ = 15069528.

The previous prime is 30139051. The next prime is 30139061. The reversal of 30139058 is 85093103.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16024009 + 14115049 = 4003^2 + 3757^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30139058.

It is not an unprimeable number, because it can be changed into a prime (30139051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7534763 + ... + 7534766.

Almost surely, 2^30139058 is an apocalyptic number.

30139058 is a deficient number, since it is larger than the sum of its proper divisors (15069532).

30139058 is a wasteful number, since it uses less digits than its factorization.

30139058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15069531.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 30139058 is about 5489.9050993619. The cubic root of 30139058 is about 311.2026057522.

The spelling of 30139058 in words is "thirty million, one hundred thirty-nine thousand, fifty-eight".