15247442 has 8 divisors (see below), whose sum is σ = 26138496. Its totient is φ = 6534612.

The previous prime is 15247409. The next prime is 15247447. The reversal of 15247442 is 24474251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (15247447) 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, 544538 + ... + 544565.

It is an arithmetic number, because the mean of its divisors is an integer number (3267312).

Almost surely, 2^15247442 is an apocalyptic number.

15247442 is a deficient number, since it is larger than the sum of its proper divisors (10891054).

15247442 is a wasteful number, since it uses less digits than its factorization.

15247442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089112.

The product of its digits is 8960, while the sum is 29.

The square root of 15247442 is about 3904.7973058790. The cubic root of 15247442 is about 247.9699170066.

The spelling of 15247442 in words is "fifteen million, two hundred forty-seven thousand, four hundred forty-two".