30420982 has 8 divisors (see below), whose sum is σ = 47103552. Its totient is φ = 14719800.

The previous prime is 30420977. The next prime is 30420983. The reversal of 30420982 is 28902403.

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

It is a super-2 number, since 2×30420982² = 1850872291688648, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30420982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30420983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245269 + ... + 245392.

It is an arithmetic number, because the mean of its divisors is an integer number (5887944).

Almost surely, 2^30420982 is an apocalyptic number.

30420982 is a deficient number, since it is larger than the sum of its proper divisors (16682570).

30420982 is a wasteful number, since it uses less digits than its factorization.

30420982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490694.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 30420982 is about 5515.5219154673. The cubic root of 30420982 is about 312.1699367358.

The spelling of 30420982 in words is "thirty million, four hundred twenty thousand, nine hundred eighty-two".