30372020 has 48 divisors (see below), whose sum is σ = 74148480. Its totient is φ = 10233984.

The previous prime is 30372007. The next prime is 30372071. The reversal of 30372020 is 2027303.

It is a self number, because there is not a number n which added to its sum of digits gives 30372020.

It is a congruent number.

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, 6422 + ... + 10098.

It is an arithmetic number, because the mean of its divisors is an integer number (1544760).

Almost surely, 2^30372020 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 30372020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37074240).

30372020 is an abundant number, since it is smaller than the sum of its proper divisors (43776460).

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

30372020 is a wasteful number, since it uses less digits than its factorization.

30372020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3752 (or 3750 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 17.

The square root of 30372020 is about 5511.0815635409. The cubic root of 30372020 is about 312.0023695853.

Adding to 30372020 its reverse (2027303), we get a palindrome (32399323).

The spelling of 30372020 in words is "thirty million, three hundred seventy-two thousand, twenty".