30420108 has 18 divisors (see below), whose sum is σ = 76895364. Its totient is φ = 10140024.

The previous prime is 30420107. The next prime is 30420109. The reversal of 30420108 is 80102403.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30420107) and next prime (30420109).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (30420107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 422466 + ... + 422537.

Almost surely, 2^30420108 is an apocalyptic number.

It is an amenable number.

30420108 is an abundant number, since it is smaller than the sum of its proper divisors (46475256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30420108 is a wasteful number, since it uses less digits than its factorization.

30420108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845013 (or 845008 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 30420108 is about 5515.4426839557. The cubic root of 30420108 is about 312.1669471420.

The spelling of 30420108 in words is "thirty million, four hundred twenty thousand, one hundred eight".