15479247 has 24 divisors (see below), whose sum is σ = 24157056. Its totient is φ = 8816472.

The previous prime is 15479237. The next prime is 15479257. The reversal of 15479247 is 74297451.

It is an interprime number because it is at equal distance from previous prime (15479237) and next prime (15479257).

It is not a de Polignac number, because 15479247 - 2¹⁹ = 14954959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15479227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50268 + ... + 50574.

It is an arithmetic number, because the mean of its divisors is an integer number (1006544).

Almost surely, 2^15479247 is an apocalyptic number.

15479247 is a deficient number, since it is larger than the sum of its proper divisors (8677809).

15479247 is an frugal number, since it uses more digits than its factorization.

15479247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 317 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 15479247 is about 3934.3674205646. The cubic root of 15479247 is about 249.2202209741.

It can be divided in two parts, 154 and 79247, that added together give a triangular number (79401 = T₃₉₈).

The spelling of 15479247 in words is "fifteen million, four hundred seventy-nine thousand, two hundred forty-seven".