30049020 has 72 divisors (see below), whose sum is σ = 91880880. Its totient is φ = 7948800.

The previous prime is 30049009. The next prime is 30049021. The reversal of 30049020 is 2094003.

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

It is a junction number, because it is equal to n+sod(n) for n = 30048984 and 30049002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30049021) 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 23 ways as a sum of consecutive naturals, for example, 24420 + ... + 25620.

Almost surely, 2^30049020 is an apocalyptic number.

30049020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30049020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45940440).

30049020 is an abundant number, since it is smaller than the sum of its proper divisors (61831860).

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

30049020 is a wasteful number, since it uses less digits than its factorization.

30049020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355 (or 1350 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 30049020 is about 5481.6986418445. The cubic root of 30049020 is about 310.8923990964.

The spelling of 30049020 in words is "thirty million, forty-nine thousand, twenty".