15228461 has 4 divisors (see below), whose sum is σ = 15890592. Its totient is φ = 14566332.

The previous prime is 15228449. The next prime is 15228487. The reversal of 15228461 is 16482251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15228461 - 2⁶ = 15228397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15228401) 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 3 ways as a sum of consecutive naturals, for example, 331031 + ... + 331076.

It is an arithmetic number, because the mean of its divisors is an integer number (3972648).

Almost surely, 2^15228461 is an apocalyptic number.

It is an amenable number.

15228461 is a deficient number, since it is larger than the sum of its proper divisors (662131).

15228461 is an equidigital number, since it uses as much as digits as its factorization.

15228461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662130.

The product of its digits is 3840, while the sum is 29.

The square root of 15228461 is about 3902.3660771383. The cubic root of 15228461 is about 247.8669779601.

The spelling of 15228461 in words is "fifteen million, two hundred twenty-eight thousand, four hundred sixty-one".