30450402 has 12 divisors (see below), whose sum is σ = 65975910. Its totient is φ = 10150128.

The previous prime is 30450397. The next prime is 30450419. The reversal of 30450402 is 20405403.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24295041 + 6155361 = 4929^2 + 2481^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1691689 = 30450402 / (3 + 0 + 4 + 5 + 0 + 4 + 0 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 845827 + ... + 845862.

Almost surely, 2^30450402 is an apocalyptic number.

30450402 is an abundant number, since it is smaller than the sum of its proper divisors (35525508).

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

30450402 is a wasteful number, since it uses less digits than its factorization.

30450402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691697 (or 1691694 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 30450402 is about 5518.1882896472. The cubic root of 30450402 is about 312.2705370442.

Adding to 30450402 its reverse (20405403), we get a palindrome (50855805).

The spelling of 30450402 in words is "thirty million, four hundred fifty thousand, four hundred two".