15352420 has 24 divisors (see below), whose sum is σ = 32425848. Its totient is φ = 6105600.

The previous prime is 15352417. The next prime is 15352433. The reversal of 15352420 is 2425351.

It can be written as a sum of positive squares in 4 ways, for example, as 1454436 + 13897984 = 1206^2 + 3728^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15352391 and 15352400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1500 + ... + 5740.

It is an arithmetic number, because the mean of its divisors is an integer number (1351077).

Almost surely, 2^15352420 is an apocalyptic number.

15352420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15352420 is an abundant number, since it is smaller than the sum of its proper divisors (17073428).

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

15352420 is a wasteful number, since it uses less digits than its factorization.

15352420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4431 (or 4429 counting only the distinct ones).

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

The square root of 15352420 is about 3918.2164309798. The cubic root of 15352420 is about 248.5377034315.

Adding to 15352420 its reverse (2425351), we get a palindrome (17777771).

The spelling of 15352420 in words is "fifteen million, three hundred fifty-two thousand, four hundred twenty".