30220722 has 64 divisors (see below), whose sum is σ = 79257600. Its totient is φ = 8352720.

The previous prime is 30220717. The next prime is 30220727. The reversal of 30220722 is 22702203.

It is an interprime number because it is at equal distance from previous prime (30220717) and next prime (30220727).

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

It is a cake number, because a cake can be divided into 30220722 parts by 566 planar cuts.

It is a junction number, because it is equal to n+sod(n) for n = 30220695 and 30220704.

It is not an unprimeable number, because it can be changed into a prime (30220727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10429 + ... + 13007.

It is an arithmetic number, because the mean of its divisors is an integer number (1238400).

Almost surely, 2^30220722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30220722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39628800).

30220722 is an abundant number, since it is smaller than the sum of its proper divisors (49036878).

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

30220722 is a wasteful number, since it uses less digits than its factorization.

30220722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628 (or 2622 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 30220722 is about 5497.3377192965. The cubic root of 30220722 is about 311.4834277379.

Adding to 30220722 its reverse (22702203), we get a palindrome (52922925).

The spelling of 30220722 in words is "thirty million, two hundred twenty thousand, seven hundred twenty-two".