15228463 has 4 divisors (see below), whose sum is σ = 15268608. Its totient is φ = 15188320.

The previous prime is 15228449. The next prime is 15228487. The reversal of 15228463 is 36482251.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15228463 - 2⁹ = 15227951 is a prime.

It is a super-3 number, since 3×15228463³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15228163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19498 + ... + 20263.

It is an arithmetic number, because the mean of its divisors is an integer number (3817152).

Almost surely, 2^15228463 is an apocalyptic number.

15228463 is a deficient number, since it is larger than the sum of its proper divisors (40145).

15228463 is an equidigital number, since it uses as much as digits as its factorization.

15228463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40144.

The product of its digits is 11520, while the sum is 31.

The square root of 15228463 is about 3902.3663333931. The cubic root of 15228463 is about 247.8669888111.

The spelling of 15228463 in words is "fifteen million, two hundred twenty-eight thousand, four hundred sixty-three".