15272420 has 12 divisors (see below), whose sum is σ = 32072124. Its totient is φ = 6108960.

The previous prime is 15272419. The next prime is 15272423. The reversal of 15272420 is 2427251.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2427364 + 12845056 = 1558^2 + 3584^2 .

It is not an unprimeable number, because it can be changed into a prime (15272423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381791 + ... + 381830.

It is an arithmetic number, because the mean of its divisors is an integer number (2672677).

Almost surely, 2^15272420 is an apocalyptic number.

15272420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15272420 is an abundant number, since it is smaller than the sum of its proper divisors (16799704).

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

15272420 is a wasteful number, since it uses less digits than its factorization.

15272420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763630 (or 763628 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 15272420 is about 3907.9943705180. The cubic root of 15272420 is about 248.1052492913.

Adding to 15272420 its reverse (2427251), we get a palindrome (17699671).

The spelling of 15272420 in words is "fifteen million, two hundred seventy-two thousand, four hundred twenty".