30428602 has 4 divisors (see below), whose sum is σ = 45642906. Its totient is φ = 15214300.

The previous prime is 30428597. The next prime is 30428603. The reversal of 30428602 is 20682403.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 16072081 + 14356521 = 4009^2 + 3789^2 .

It is not an unprimeable number, because it can be changed into a prime (30428603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7607149 + ... + 7607152.

Almost surely, 2^30428602 is an apocalyptic number.

30428602 is a deficient number, since it is larger than the sum of its proper divisors (15214304).

30428602 is a wasteful number, since it uses less digits than its factorization.

30428602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15214303.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 30428602 is about 5516.2126499982. The cubic root of 30428602 is about 312.1959991898.

The spelling of 30428602 in words is "thirty million, four hundred twenty-eight thousand, six hundred two".