30026220 has 96 divisors (see below), whose sum is σ = 98112000. Its totient is φ = 6858432.

The previous prime is 30026219. The next prime is 30026231. The reversal of 30026220 is 2262003.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 30026220.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 19851 + ... + 21309.

It is an arithmetic number, because the mean of its divisors is an integer number (1022000).

Almost surely, 2^30026220 is an apocalyptic number.

30026220 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 30026220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49056000).

30026220 is an abundant number, since it is smaller than the sum of its proper divisors (68085780).

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

30026220 is a wasteful number, since it uses less digits than its factorization.

30026220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492 (or 1476 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 30026220 is about 5479.6185998662. The cubic root of 30026220 is about 310.8137482759.

Adding to 30026220 its reverse (2262003), we get a palindrome (32288223).

The spelling of 30026220 in words is "thirty million, twenty-six thousand, two hundred twenty".