30420479 has 8 divisors (see below), whose sum is σ = 31595520. Its totient is φ = 29266776.

The previous prime is 30420473. The next prime is 30420491. The reversal of 30420479 is 97402403.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30420479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30420473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2399 + ... + 8160.

It is an arithmetic number, because the mean of its divisors is an integer number (3949440).

Almost surely, 2^30420479 is an apocalyptic number.

30420479 is a deficient number, since it is larger than the sum of its proper divisors (1175041).

30420479 is a wasteful number, since it uses less digits than its factorization.

30420479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10669.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 30420479 is about 5515.4763166929. The cubic root of 30420479 is about 312.1682161871.

The spelling of 30420479 in words is "thirty million, four hundred twenty thousand, four hundred seventy-nine".