30715002 has 36 divisors (see below), whose sum is σ = 68957070. Its totient is φ = 9880416.

The previous prime is 30714997. The next prime is 30715007. The reversal of 30715002 is 20051703.

It is an interprime number because it is at equal distance from previous prime (30714997) and next prime (30715007).

It can be written as a sum of positive squares in 3 ways, for example, as 30702681 + 12321 = 5541^2 + 111^2 .

It is a super-2 number, since 2×30715002² = 1886822695720008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (30715007) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14124 + ... + 16152.

Almost surely, 2^30715002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30715002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34478535).

30715002 is an abundant number, since it is smaller than the sum of its proper divisors (38242068).

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

30715002 is a wasteful number, since it uses less digits than its factorization.

30715002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095 (or 2063 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 30715002 is about 5542.1116914043. Note that the first 3 decimals coincide. The cubic root of 30715002 is about 313.1724255559.

Adding to 30715002 its reverse (20051703), we get a palindrome (50766705).

The spelling of 30715002 in words is "thirty million, seven hundred fifteen thousand, two".