30130402 has 4 divisors (see below), whose sum is σ = 45195606. Its totient is φ = 15065200.

The previous prime is 30130381. The next prime is 30130403. The reversal of 30130402 is 20403103.

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., 20151121 + 9979281 = 4489^2 + 3159^2 .

It is a super-2 number, since 2×30130402² = 1815682249363208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30130403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7532599 + ... + 7532602.

Almost surely, 2^30130402 is an apocalyptic number.

30130402 is a deficient number, since it is larger than the sum of its proper divisors (15065204).

30130402 is a wasteful number, since it uses less digits than its factorization.

30130402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15065203.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 30130402 is about 5489.1166866810. The cubic root of 30130402 is about 311.1728102215.

Adding to 30130402 its reverse (20403103), we get a palindrome (50533505).

It can be divided in two parts, 301 and 30402, that added together give a palindrome (30703).

The spelling of 30130402 in words is "thirty million, one hundred thirty thousand, four hundred two".