15162420 has 96 divisors (see below), whose sum is σ = 52270848. Its totient is φ = 3197952.

The previous prime is 15162397. The next prime is 15162421. The reversal of 15162420 is 2426151.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15162421) 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, 4072 + ... + 6848.

It is an arithmetic number, because the mean of its divisors is an integer number (544488).

Almost surely, 2^15162420 is an apocalyptic number.

15162420 is a gapful number since it is divisible by the number (10) 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 15162420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26135424).

15162420 is an abundant number, since it is smaller than the sum of its proper divisors (37108428).

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

15162420 is a wasteful number, since it uses less digits than its factorization.

15162420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2809 (or 2807 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 15162420 is about 3893.8952220110. The cubic root of 15162420 is about 247.5081519609.

Adding to 15162420 its reverse (2426151), we get a palindrome (17588571).

The spelling of 15162420 in words is "fifteen million, one hundred sixty-two thousand, four hundred twenty".