30205102 has 4 divisors (see below), whose sum is σ = 45307656. Its totient is φ = 15102550.

The previous prime is 30205081. The next prime is 30205103. The reversal of 30205102 is 20150203.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30205103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7551274 + ... + 7551277.

It is an arithmetic number, because the mean of its divisors is an integer number (11326914).

Almost surely, 2^30205102 is an apocalyptic number.

30205102 is a deficient number, since it is larger than the sum of its proper divisors (15102554).

30205102 is a wasteful number, since it uses less digits than its factorization.

30205102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15102553.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 30205102 is about 5495.9168479881. The cubic root of 30205102 is about 311.4297536438.

Adding to 30205102 its reverse (20150203), we get a palindrome (50355305).

The spelling of 30205102 in words is "thirty million, two hundred five thousand, one hundred two".