30000406 has 4 divisors (see below), whose sum is σ = 45000612. Its totient is φ = 15000202.

The previous prime is 30000401. The next prime is 30000419. The reversal of 30000406 is 60400003.

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

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30000401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7500100 + ... + 7500103.

It is an arithmetic number, because the mean of its divisors is an integer number (11250153).

Almost surely, 2^30000406 is an apocalyptic number.

30000406 is a deficient number, since it is larger than the sum of its proper divisors (15000206).

30000406 is a wasteful number, since it uses less digits than its factorization.

30000406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15000205.

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

The square root of 30000406 is about 5477.2626374860. The cubic root of 30000406 is about 310.7246522962.

Adding to 30000406 its reverse (60400003), we get a palindrome (90400409).

The spelling of 30000406 in words is "thirty million, four hundred six", and thus it is an aban number.