15253420 has 144 divisors (see below), whose sum is σ = 43323840. Its totient is φ = 4386816.

The previous prime is 15253397. The next prime is 15253463. The reversal of 15253420 is 2435251.

It is a junction number, because it is equal to n+sod(n) for n = 15253391 and 15253400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 525966 + ... + 525994.

It is an arithmetic number, because the mean of its divisors is an integer number (300860).

Almost surely, 2^15253420 is an apocalyptic number.

15253420 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 15253420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21661920).

15253420 is an abundant number, since it is smaller than the sum of its proper divisors (28070420).

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

15253420 is a wasteful number, since it uses less digits than its factorization.

15253420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 15253420 is about 3905.5626995351. The cubic root of 15253420 is about 248.0023196106.

Adding to 15253420 its reverse (2435251), we get a palindrome (17688671).

The spelling of 15253420 in words is "fifteen million, two hundred fifty-three thousand, four hundred twenty".