30253239 has 6 divisors (see below), whose sum is σ = 43699136. Its totient is φ = 20168820.

The previous prime is 30253231. The next prime is 30253243. The reversal of 30253239 is 93235203.

It is not a de Polignac number, because 30253239 - 2³ = 30253231 is a prime.

It is a super-2 number, since 2×30253239² = 1830516939982242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30253231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1680727 + ... + 1680744.

Almost surely, 2^30253239 is an apocalyptic number.

30253239 is a deficient number, since it is larger than the sum of its proper divisors (13445897).

30253239 is a wasteful number, since it uses less digits than its factorization.

30253239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361477 (or 3361474 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

The square root of 30253239 is about 5500.2944466637. The cubic root of 30253239 is about 311.5951047089.

The spelling of 30253239 in words is "thirty million, two hundred fifty-three thousand, two hundred thirty-nine".