15136420 has 24 divisors (see below), whose sum is σ = 34232184. Its totient is φ = 5588736.

The previous prime is 15136417. The next prime is 15136423. The reversal of 15136420 is 2463151.

It is an interprime number because it is at equal distance from previous prime (15136417) and next prime (15136423).

It can be written as a sum of positive squares in 4 ways, for example, as 589824 + 14546596 = 768^2 + 3814^2 .

It is a super-2 number, since 2×15136420² = 458222420832800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15136391 and 15136400.

It is not an unprimeable number, because it can be changed into a prime (15136423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28849 + ... + 29368.

It is an arithmetic number, because the mean of its divisors is an integer number (1426341).

Almost surely, 2^15136420 is an apocalyptic number.

15136420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15136420 is an abundant number, since it is smaller than the sum of its proper divisors (19095764).

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

15136420 is a wasteful number, since it uses less digits than its factorization.

15136420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58239 (or 58237 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 15136420 is about 3890.5552302981. Note that the first 3 decimals coincide. The cubic root of 15136420 is about 247.3665981774.

Adding to 15136420 its reverse (2463151), we get a palindrome (17599571).

The spelling of 15136420 in words is "fifteen million, one hundred thirty-six thousand, four hundred twenty".