30002156 has 6 divisors (see below), whose sum is σ = 52503780. Its totient is φ = 15001076.

The previous prime is 30002123. The next prime is 30002207. The reversal of 30002156 is 65120003.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3750266 + ... + 3750273.

It is an arithmetic number, because the mean of its divisors is an integer number (8750630).

Almost surely, 2^30002156 is an apocalyptic number.

It is an amenable number.

30002156 is a deficient number, since it is larger than the sum of its proper divisors (22501624).

30002156 is a wasteful number, since it uses less digits than its factorization.

30002156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7500543 (or 7500541 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 30002156 is about 5477.4223864880. The cubic root of 30002156 is about 310.7306939652.

Adding to 30002156 its reverse (65120003), we get a palindrome (95122159).

The spelling of 30002156 in words is "thirty million, two thousand, one hundred fifty-six".