15220120 has 16 divisors (see below), whose sum is σ = 34245360. Its totient is φ = 6088032.

The previous prime is 15220111. The next prime is 15220129. The reversal of 15220120 is 2102251.

15220120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (15220111) and next prime (15220129).

It is a self number, because there is not a number n which added to its sum of digits gives 15220120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15220129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190212 + ... + 190291.

It is an arithmetic number, because the mean of its divisors is an integer number (2140335).

Almost surely, 2^15220120 is an apocalyptic number.

15220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15220120 is an abundant number, since it is smaller than the sum of its proper divisors (19025240).

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

15220120 is a wasteful number, since it uses less digits than its factorization.

15220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380514 (or 380510 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 15220120 is about 3901.2972201564. The cubic root of 15220120 is about 247.8217154296.

Adding to 15220120 its reverse (2102251), we get a palindrome (17322371).

The spelling of 15220120 in words is "fifteen million, two hundred twenty thousand, one hundred twenty".