30220715 has 32 divisors (see below), whose sum is σ = 42771456. Its totient is φ = 20073600.

The previous prime is 30220669. The next prime is 30220717. The reversal of 30220715 is 51702203.

It is not a de Polignac number, because 30220715 - 2¹⁰ = 30219691 is a prime.

It is a super-2 number, since 2×30220715² = 1826583230222450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30220717) 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 31 ways as a sum of consecutive naturals, for example, 293354 + ... + 293456.

It is an arithmetic number, because the mean of its divisors is an integer number (1336608).

Almost surely, 2^30220715 is an apocalyptic number.

30220715 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30220715 is a deficient number, since it is larger than the sum of its proper divisors (12550741).

30220715 is a wasteful number, since it uses less digits than its factorization.

30220715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 30220715 is about 5497.3370826246. The cubic root of 30220715 is about 311.4834036883.

Adding to 30220715 its reverse (51702203), we get a palindrome (81922918).

The spelling of 30220715 in words is "thirty million, two hundred twenty thousand, seven hundred fifteen".