30139294 has 8 divisors (see below), whose sum is σ = 46767960. Its totient is φ = 14549976.

The previous prime is 30139279. The next prime is 30139297. The reversal of 30139294 is 49293103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30139297) 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, 259764 + ... + 259879.

It is an arithmetic number, because the mean of its divisors is an integer number (5845995).

Almost surely, 2^30139294 is an apocalyptic number.

30139294 is a deficient number, since it is larger than the sum of its proper divisors (16628666).

30139294 is a wasteful number, since it uses less digits than its factorization.

30139294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519674.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 30139294 is about 5489.9265933162. The cubic root of 30139294 is about 311.2034180274.

The spelling of 30139294 in words is "thirty million, one hundred thirty-nine thousand, two hundred ninety-four".