30519020 has 48 divisors (see below), whose sum is σ = 75781440. Its totient is φ = 10101504.

The previous prime is 30519001. The next prime is 30519053. The reversal of 30519020 is 2091503.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 30518983 and 30519001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302 + ... + 7818.

It is an arithmetic number, because the mean of its divisors is an integer number (1578780).

Almost surely, 2^30519020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30519020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37890720).

30519020 is an abundant number, since it is smaller than the sum of its proper divisors (45262420).

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

30519020 is a wasteful number, since it uses less digits than its factorization.

30519020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7562 (or 7560 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 30519020 is about 5524.4022301060. The cubic root of 30519020 is about 312.5049215225.

The spelling of 30519020 in words is "thirty million, five hundred nineteen thousand, twenty".