30139733 has 8 divisors (see below), whose sum is σ = 32508000. Its totient is φ = 27778608.

The previous prime is 30139727. The next prime is 30139741. The reversal of 30139733 is 33793103.

It is a happy number.

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

It is not a de Polignac number, because 30139733 - 2⁴ = 30139717 is a prime.

It is a super-2 number, since 2×30139733² = 1816807010622578, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30139696 and 30139705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30139723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9818 + ... + 12516.

It is an arithmetic number, because the mean of its divisors is an integer number (4063500).

Almost surely, 2^30139733 is an apocalyptic number.

It is an amenable number.

30139733 is a deficient number, since it is larger than the sum of its proper divisors (2368267).

30139733 is a wasteful number, since it uses less digits than its factorization.

30139733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571.

The product of its (nonzero) digits is 5103, while the sum is 29.

The square root of 30139733 is about 5489.9665754902. The cubic root of 30139733 is about 311.2049289855.

The spelling of 30139733 in words is "thirty million, one hundred thirty-nine thousand, seven hundred thirty-three".