30543138 has 48 divisors (see below), whose sum is σ = 68590080. Its totient is φ = 9816768.

The previous prime is 30543137. The next prime is 30543151. The reversal of 30543138 is 83134503.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (30543133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66606 + ... + 67062.

It is an arithmetic number, because the mean of its divisors is an integer number (1428960).

Almost surely, 2^30543138 is an apocalyptic number.

30543138 is an abundant number, since it is smaller than the sum of its proper divisors (38046942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30543138 is a wasteful number, since it uses less digits than its factorization.

30543138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591 (or 588 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 30543138 is about 5526.5846596248. The cubic root of 30543138 is about 312.5872200276.

The spelling of 30543138 in words is "thirty million, five hundred forty-three thousand, one hundred thirty-eight".