30406490 has 8 divisors (see below), whose sum is σ = 54731700. Its totient is φ = 12162592.

The previous prime is 30406463. The next prime is 30406507. The reversal of 30406490 is 9460403.

It can be written as a sum of positive squares in 2 ways, for example, as 27994681 + 2411809 = 5291^2 + 1553^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1520315 + ... + 1520334.

Almost surely, 2^30406490 is an apocalyptic number.

30406490 is a deficient number, since it is larger than the sum of its proper divisors (24325210).

30406490 is a wasteful number, since it uses less digits than its factorization.

30406490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3040656.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 30406490 is about 5514.2080120358. The cubic root of 30406490 is about 312.1203581774.

Adding to 30406490 its reverse (9460403), we get a palindrome (39866893).

The spelling of 30406490 in words is "thirty million, four hundred six thousand, four hundred ninety".