30280990 has 8 divisors (see below), whose sum is σ = 54505800. Its totient is φ = 12112392.

The previous prime is 30280981. The next prime is 30280993. The reversal of 30280990 is 9908203.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30280993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1514040 + ... + 1514059.

It is an arithmetic number, because the mean of its divisors is an integer number (6813225).

Almost surely, 2^30280990 is an apocalyptic number.

30280990 is a deficient number, since it is larger than the sum of its proper divisors (24224810).

30280990 is a wasteful number, since it uses less digits than its factorization.

30280990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3028106.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 30280990 is about 5502.8165515489. The cubic root of 30280990 is about 311.6903499722.

The spelling of 30280990 in words is "thirty million, two hundred eighty thousand, nine hundred ninety".